Na Odontologia contemporânea, a estética sofreu uma valorização significativa, ganhando destaque ... more Na Odontologia contemporânea, a estética sofreu uma valorização significativa, ganhando destaque e importância. Nesse contexto, a beleza é influenciada pelo contorno, forma, simetria, alinhamento e, principalmente, pela cor dos dentes. O clareamento de dentes anteriores desvitalizados escurecidos tem se tornado uma terapia muito requisitada, uma vez que o escurecimento dos dentes é motivo de grande insatisfação por parte dos pacientes. Esta revisão de literatura tem como objetivo analisar os dados disponíveis na literatura sobre este assunto, uma vez que a associação entre o clareamento interno e a reabsorção radicular externa cervical é uma questão que ainda gera dúvidas na prática odontológica. O clareamento interno apresenta resultados esteticamente satisfatórios, no entanto, apresenta como possível efeito colateral a reabsorção radicular cervical externa, que prejudica ou até mesmo inviabiliza a permanência do elemento dental na cavidade bucal. A etiologia da reabsorção radicula...
Purpose: To clinically evaluate the capacity of a halogen curing-light to act as a catalyst of a ... more Purpose: To clinically evaluate the capacity of a halogen curing-light to act as a catalyst of a 37.5% hydrogen peroxide based product used to lightening teeth. Materials and Methods: Thirteen human subjects had their upperarches (premolar to premolar) bleached and evaluated. Split-arch design using centrals, laterals, canines and premolars on one side treated with bleach (Whiteness HP Maxx, FGM, Joinvile, SC/Brazil) plus light, was compared with contralateral teeth using bleach alone. Pre and pos-operatory pictures were taken under the same light conditions. Then the pictures were analyzed with commercial software to compare the degree of lightening obtained on the right and left cervical area of the upper central incisors. Data were analyzed using paired Student-T test (p≤0.05). Results: Pairs of means for brightness and RGB blue channel showed no statistically significance differences at baseline and immediately after the third session of bleaching, despite of the use of the halo...
The aim of this in vivo study was to evaluate the effectiveness of an inoffice tooth bleaching te... more The aim of this in vivo study was to evaluate the effectiveness of an inoffice tooth bleaching technique using different application times of a 38% hydrogen peroxide– based bleaching gel (Opalescence Xtra Boost, Ultradent). Additionally, the tooth sensitivity felt by the patients during the treatment and the patients’ satisfaction degree regarding the treatment were assessed as well. Sixty patients were selected. Each maxillary hemi-arch was assigned to a different application time of the bleaching gel. The patients were randomly divided into 3 groups (n=20): G45 – three 15 minutes applications, with gel switches between each application (45A) whereas on the other maxillary hemi-arch, the bleaching gel was applied during 45 minutes, without gel switching (45B). G30 – three 15 minutes applications, with gel switches between each application (30A) whereas, on the other maxillary hemi-arch, the gel was applied during 30 minutes without gel switching (30B). G20 – three 15 minutes applic...
ABSTRACT All-ceramic crowns and veneers have been used extensively in prosthodontics with proven ... more ABSTRACT All-ceramic crowns and veneers have been used extensively in prosthodontics with proven clinical success. The development of new reinforced ceramics has led to a broader range of indications. Traditional veneer preparations are now often replaced with extended defect-oriented preparation designs, ie, extended veneers. However, although extended veneers can serve as an alternative to full- crown preparations, they are not the best choice for all clinical situations. Choosing correctly between all-ceramic crowns and extended veneers when restoring the anterior dentition is crucial to achieving a conservative and long-lasting treatment. This article addresses key evidence-based considerations regarding the rehabilitation of the anterior dentition using all-ceramic crowns and veneers. Further, a case report involving both types of restorations is presented.
Objectives: The aim of this study was to verify the match between 5 shades of composites from dif... more Objectives: The aim of this study was to verify the match between 5 shades of composites from different manufacturers with a shade guide and among the systems using a portable spectrophotometer. Materials and Methods: Shade measurements were performed on specimens of Z350 XT (3M ESPE), Charisma Diamond (Heraeus Kulzer GmbH), Esthet X-HD (Dentsply Caulk), and Empress Direct (Ivoclar-Vivadent) for shades A1, A2, A3, B1, and C3 using a Vita Easyshade spectrophotometer (Vita Zahnfabrik) against a white background. Corresponding shades of Vitapan Classical (Vita Zahnfabrik) guide were measured likewise and shade variation (ΔE) was calculated based on International Commission on Illumination L*a*b* parameters. The ΔE of the composites in each shade was compared by one-way analysis of variance and Tukey's post hoc test (α = 0.05). Results: All composites presented ΔE > 3.7 compared with the shade guide. Variation in shades A3, B1, and C3 was significantly different for all composites. ΔE of Z350 XT was significantly lower for A1 than for the other shades, whereas ΔE of Z350 XT and Charisma Diamond were significantly lower for A2 than for the other shades. Conclusions: No composite shade matched with the shade guide. Equivalent shades of the restorative composite from different manufacturers may show clinically noticeable ΔE.
Revista da Faculdade de Odontologia de Porto Alegre
Na Odontologia contemporânea, a estética sofreu uma valorização significativa, ganhando destaque ... more Na Odontologia contemporânea, a estética sofreu uma valorização significativa, ganhando destaque e importância. Nesse contexto, a beleza é influenciada pelo contorno, forma, simetria, alinhamento e, principalmente, pela cor dos dentes. O clareamento de dentes anteriores desvitalizados escurecidos tem se tornado uma terapia muito requisitada, uma vez que o escurecimento dos dentes é motivo de grande insatisfação por parte dos pacientes. Esta revisão de literatura tem como objetivo analisar os dados disponíveis na literatura sobre este assunto, uma vez que a associação entre o clareamento interno e a reabsorção radicular externa cervical é uma questão que ainda gera dúvidas na prática odontológica. O clareamento interno apresenta resultados esteticamente satisfatórios, no entanto, apresenta como possível efeito colateral a reabsorção radicular cervical externa, que prejudica ou até mesmo inviabiliza a permanência do elemento dental na cavidade bucal. A etiologia da reabsorção radicula...
ABSTRACT All-ceramic crowns and veneers have been used extensively in prosthodontics with proven ... more ABSTRACT All-ceramic crowns and veneers have been used extensively in prosthodontics with proven clinical success. The development of new reinforced ceramics has led to a broader range of indications. Traditional veneer preparations are now often replaced with extended defect-oriented preparation designs, ie, extended veneers. However, although extended veneers can serve as an alternative to full- crown preparations, they are not the best choice for all clinical situations. Choosing correctly between all-ceramic crowns and extended veneers when restoring the anterior dentition is crucial to achieving a conservative and long-lasting treatment. This article addresses key evidence-based considerations regarding the rehabilitation of the anterior dentition using all-ceramic crowns and veneers. Further, a case report involving both types of restorations is presented.
Revista da Faculdade de Odontologia de Porto Alegre
Na Odontologia contemporânea, a estética sofreu uma valorização significativa, ganhando destaque ... more Na Odontologia contemporânea, a estética sofreu uma valorização significativa, ganhando destaque e importância. Nesse contexto, a beleza é influenciada pelo contorno, forma, simetria, alinhamento e, principalmente, pela cor dos dentes. O clareamento de dentes anteriores desvitalizados escurecidos tem se tornado uma terapia muito requisitada, uma vez que o escurecimento dos dentes é motivo de grande insatisfação por parte dos pacientes. Esta revisão de literatura tem como objetivo analisar os dados disponíveis na literatura sobre este assunto, uma vez que a associação entre o clareamento interno e a reabsorção radicular externa cervical é uma questão que ainda gera dúvidas na prática odontológica. O clareamento interno apresenta resultados esteticamente satisfatórios, no entanto, apresenta como possível efeito colateral a reabsorção radicular cervical externa, que prejudica ou até mesmo inviabiliza a permanência do elemento dental na cavidade bucal. A etiologia da reabsorção radicula...
Revista da Faculdade de Odontologia de Porto Alegre. Open Journal Systems. Ajuda do sistema. Usuá... more Revista da Faculdade de Odontologia de Porto Alegre. Open Journal Systems. Ajuda do sistema. Usuário Login, Senha, Lembrar usuário. Idioma Español (España). Conteúdo da revista Pesquisa. Todos. ...
The purpose of this study was to investigate the influence of Nd:YAG on microtensile bond strengt... more The purpose of this study was to investigate the influence of Nd:YAG on microtensile bond strength (microTBS) of different adhesive systems for human dentin. Lasers have been widely used in dentistry. New adhesive systems with different chemical compositions are introduced every year, and it is important to investigate the bonding of new adhesive systems to dentin irradiated with laser. The occlusal surfaces of third molars were removed to obtain flat dentin surfaces. The teeth were randomly divided into six groups. Each adhesive system was applied, according to manufacturers' instructions, to surface dentine with and without Nd:YAG laser irradiation (0.9 W, 15 Hz, 60 mJ per pulse). A block of composite resin was built over the adhesive layer. The specimens were sectioned to obtain 0.70 x 0.70 mm of transversal section. Twenty test specimens were selected for each group, and were then submitted to microTBS on a universal testing machine. According to Student's t-test, for Single Bond, there was no statistically significant difference without (49.32 MPa) and with (47.34 MPa) laser application (p = 0.60). For the Tyrian SPE/One Step Plus, microTBS value with laser (27.09 MPa) was statistically higher than without laser (19.13 MPa), as well as for Adper Prompt L-Pop (22.85 and 13.78 Mpa; p < or = 0.01). The application of Nd:YAG laser to dentin provided an increase in the bond strength values for the Tyrian SPE/One Step Plus and Adper Prompt L-Pop adhesive systems, but did not influence the bond strength values of the Single Bond adhesive system.
All-ceramic crowns and veneers have been used extensively in prosthodontics with proven clinical ... more All-ceramic crowns and veneers have been used extensively in prosthodontics with proven clinical success. The development of new reinforced ceramics has led to a broader range of indications. Traditional veneer preparations are now often replaced with extended defect-oriented preparation designs, ie, extended veneers. However, although extended veneers can serve as an alternative to full- crown preparations, they are not the best choice for all clinical situations. Choosing correctly between all-ceramic crowns and extended veneers when restoring the anterior dentition is crucial to achieving a conservative and long-lasting treatment. This article addresses key evidence-based considerations regarding the rehabilitation of the anterior dentition using all-ceramic crowns and veneers. Further, a case report involving both types of restorations is presented.
There is little information in the literature regarding the relationship between preparations mad... more There is little information in the literature regarding the relationship between preparations made for direct and indirect veneers and the loss of tooth structure required for each technique. This in vitro study sought to quantify the different mass losses from preparation techniques used for direct and indirect veneers. Thirty artificial teeth were weighted using a digital balance and placed in a dental manikin in the position corresponding to the right maxillary central incisor. Five clinicians-all experts in esthetic dentistry-were asked to perform conventional preparations for both a direct composite resin veneer and an indirect ceramic veneer. After preparations, specimens were weighted again in the same digital balance. Teeth undergoing veneer preparations demonstrated a statistically significant mass loss compared to unprepared teeth. Indirect ceramic veneer preparations produced more mass loss than direct composite veneer preparations (P < 0.01).
The aim of this in vitro study was to evaluate the microtensile bond strength (µTBS) of a low-shr... more The aim of this in vitro study was to evaluate the microtensile bond strength (µTBS) of a low-shrink silorane-based composite (Filtek Silorane) and a methacrylate-based composite (Filtek Z250) to the bottom dentin of a Class I cavity using different placement techniques. Twelve third molars were used. Standard, box-type Class I cavities (6.0 x 4.0 x 2.5 mm) were prepared at the occlusal crown center, with the pulpal floor ending approximately at the midcoronal dentin. The teeth were then randomly divided into four groups, according to each placement technique: ZI--Filtek Z250 placed incrementally; ZB--Filtek Z250 placed in bulk; SI--Filtek Silorane placed incrementally; and SB--Filtek Silorane placed in bulk. Each restored third molar was subjected to microtensile bond testing after 24 hours of storage in distilled water at 37 degrees C. After storage, each molar was longitudinally sectioned in both axes to obtain rectangular sticks with an approximate 0.49 mm2 cross-sectional area....
The purpose of this study was to investigate the influence of Nd:YAG on microtensile bond strengt... more The purpose of this study was to investigate the influence of Nd:YAG on microtensile bond strength (microTBS) of different adhesive systems for human dentin. Lasers have been widely used in dentistry. New adhesive systems with different chemical compositions are introduced every year, and it is important to investigate the bonding of new adhesive systems to dentin irradiated with laser. The occlusal surfaces of third molars were removed to obtain flat dentin surfaces. The teeth were randomly divided into six groups. Each adhesive system was applied, according to manufacturers&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39; instructions, to surface dentine with and without Nd:YAG laser irradiation (0.9 W, 15 Hz, 60 mJ per pulse). A block of composite resin was built over the adhesive layer. The specimens were sectioned to obtain 0.70 x 0.70 mm of transversal section. Twenty test specimens were selected for each group, and were then submitted to microTBS on a universal testing machine. According to Student&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s t-test, for Single Bond, there was no statistically significant difference without (49.32 MPa) and with (47.34 MPa) laser application (p = 0.60). For the Tyrian SPE/One Step Plus, microTBS value with laser (27.09 MPa) was statistically higher than without laser (19.13 MPa), as well as for Adper Prompt L-Pop (22.85 and 13.78 Mpa; p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; or = 0.01). The application of Nd:YAG laser to dentin provided an increase in the bond strength values for the Tyrian SPE/One Step Plus and Adper Prompt L-Pop adhesive systems, but did not influence the bond strength values of the Single Bond adhesive system.
Na Odontologia contemporânea, a estética sofreu uma valorização significativa, ganhando destaque ... more Na Odontologia contemporânea, a estética sofreu uma valorização significativa, ganhando destaque e importância. Nesse contexto, a beleza é influenciada pelo contorno, forma, simetria, alinhamento e, principalmente, pela cor dos dentes. O clareamento de dentes anteriores desvitalizados escurecidos tem se tornado uma terapia muito requisitada, uma vez que o escurecimento dos dentes é motivo de grande insatisfação por parte dos pacientes. Esta revisão de literatura tem como objetivo analisar os dados disponíveis na literatura sobre este assunto, uma vez que a associação entre o clareamento interno e a reabsorção radicular externa cervical é uma questão que ainda gera dúvidas na prática odontológica. O clareamento interno apresenta resultados esteticamente satisfatórios, no entanto, apresenta como possível efeito colateral a reabsorção radicular cervical externa, que prejudica ou até mesmo inviabiliza a permanência do elemento dental na cavidade bucal. A etiologia da reabsorção radicula...
Purpose: To clinically evaluate the capacity of a halogen curing-light to act as a catalyst of a ... more Purpose: To clinically evaluate the capacity of a halogen curing-light to act as a catalyst of a 37.5% hydrogen peroxide based product used to lightening teeth. Materials and Methods: Thirteen human subjects had their upperarches (premolar to premolar) bleached and evaluated. Split-arch design using centrals, laterals, canines and premolars on one side treated with bleach (Whiteness HP Maxx, FGM, Joinvile, SC/Brazil) plus light, was compared with contralateral teeth using bleach alone. Pre and pos-operatory pictures were taken under the same light conditions. Then the pictures were analyzed with commercial software to compare the degree of lightening obtained on the right and left cervical area of the upper central incisors. Data were analyzed using paired Student-T test (p≤0.05). Results: Pairs of means for brightness and RGB blue channel showed no statistically significance differences at baseline and immediately after the third session of bleaching, despite of the use of the halo...
The aim of this in vivo study was to evaluate the effectiveness of an inoffice tooth bleaching te... more The aim of this in vivo study was to evaluate the effectiveness of an inoffice tooth bleaching technique using different application times of a 38% hydrogen peroxide– based bleaching gel (Opalescence Xtra Boost, Ultradent). Additionally, the tooth sensitivity felt by the patients during the treatment and the patients’ satisfaction degree regarding the treatment were assessed as well. Sixty patients were selected. Each maxillary hemi-arch was assigned to a different application time of the bleaching gel. The patients were randomly divided into 3 groups (n=20): G45 – three 15 minutes applications, with gel switches between each application (45A) whereas on the other maxillary hemi-arch, the bleaching gel was applied during 45 minutes, without gel switching (45B). G30 – three 15 minutes applications, with gel switches between each application (30A) whereas, on the other maxillary hemi-arch, the gel was applied during 30 minutes without gel switching (30B). G20 – three 15 minutes applic...
ABSTRACT All-ceramic crowns and veneers have been used extensively in prosthodontics with proven ... more ABSTRACT All-ceramic crowns and veneers have been used extensively in prosthodontics with proven clinical success. The development of new reinforced ceramics has led to a broader range of indications. Traditional veneer preparations are now often replaced with extended defect-oriented preparation designs, ie, extended veneers. However, although extended veneers can serve as an alternative to full- crown preparations, they are not the best choice for all clinical situations. Choosing correctly between all-ceramic crowns and extended veneers when restoring the anterior dentition is crucial to achieving a conservative and long-lasting treatment. This article addresses key evidence-based considerations regarding the rehabilitation of the anterior dentition using all-ceramic crowns and veneers. Further, a case report involving both types of restorations is presented.
Objectives: The aim of this study was to verify the match between 5 shades of composites from dif... more Objectives: The aim of this study was to verify the match between 5 shades of composites from different manufacturers with a shade guide and among the systems using a portable spectrophotometer. Materials and Methods: Shade measurements were performed on specimens of Z350 XT (3M ESPE), Charisma Diamond (Heraeus Kulzer GmbH), Esthet X-HD (Dentsply Caulk), and Empress Direct (Ivoclar-Vivadent) for shades A1, A2, A3, B1, and C3 using a Vita Easyshade spectrophotometer (Vita Zahnfabrik) against a white background. Corresponding shades of Vitapan Classical (Vita Zahnfabrik) guide were measured likewise and shade variation (ΔE) was calculated based on International Commission on Illumination L*a*b* parameters. The ΔE of the composites in each shade was compared by one-way analysis of variance and Tukey's post hoc test (α = 0.05). Results: All composites presented ΔE > 3.7 compared with the shade guide. Variation in shades A3, B1, and C3 was significantly different for all composites. ΔE of Z350 XT was significantly lower for A1 than for the other shades, whereas ΔE of Z350 XT and Charisma Diamond were significantly lower for A2 than for the other shades. Conclusions: No composite shade matched with the shade guide. Equivalent shades of the restorative composite from different manufacturers may show clinically noticeable ΔE.
Revista da Faculdade de Odontologia de Porto Alegre
Na Odontologia contemporânea, a estética sofreu uma valorização significativa, ganhando destaque ... more Na Odontologia contemporânea, a estética sofreu uma valorização significativa, ganhando destaque e importância. Nesse contexto, a beleza é influenciada pelo contorno, forma, simetria, alinhamento e, principalmente, pela cor dos dentes. O clareamento de dentes anteriores desvitalizados escurecidos tem se tornado uma terapia muito requisitada, uma vez que o escurecimento dos dentes é motivo de grande insatisfação por parte dos pacientes. Esta revisão de literatura tem como objetivo analisar os dados disponíveis na literatura sobre este assunto, uma vez que a associação entre o clareamento interno e a reabsorção radicular externa cervical é uma questão que ainda gera dúvidas na prática odontológica. O clareamento interno apresenta resultados esteticamente satisfatórios, no entanto, apresenta como possível efeito colateral a reabsorção radicular cervical externa, que prejudica ou até mesmo inviabiliza a permanência do elemento dental na cavidade bucal. A etiologia da reabsorção radicula...
ABSTRACT All-ceramic crowns and veneers have been used extensively in prosthodontics with proven ... more ABSTRACT All-ceramic crowns and veneers have been used extensively in prosthodontics with proven clinical success. The development of new reinforced ceramics has led to a broader range of indications. Traditional veneer preparations are now often replaced with extended defect-oriented preparation designs, ie, extended veneers. However, although extended veneers can serve as an alternative to full- crown preparations, they are not the best choice for all clinical situations. Choosing correctly between all-ceramic crowns and extended veneers when restoring the anterior dentition is crucial to achieving a conservative and long-lasting treatment. This article addresses key evidence-based considerations regarding the rehabilitation of the anterior dentition using all-ceramic crowns and veneers. Further, a case report involving both types of restorations is presented.
Revista da Faculdade de Odontologia de Porto Alegre
Na Odontologia contemporânea, a estética sofreu uma valorização significativa, ganhando destaque ... more Na Odontologia contemporânea, a estética sofreu uma valorização significativa, ganhando destaque e importância. Nesse contexto, a beleza é influenciada pelo contorno, forma, simetria, alinhamento e, principalmente, pela cor dos dentes. O clareamento de dentes anteriores desvitalizados escurecidos tem se tornado uma terapia muito requisitada, uma vez que o escurecimento dos dentes é motivo de grande insatisfação por parte dos pacientes. Esta revisão de literatura tem como objetivo analisar os dados disponíveis na literatura sobre este assunto, uma vez que a associação entre o clareamento interno e a reabsorção radicular externa cervical é uma questão que ainda gera dúvidas na prática odontológica. O clareamento interno apresenta resultados esteticamente satisfatórios, no entanto, apresenta como possível efeito colateral a reabsorção radicular cervical externa, que prejudica ou até mesmo inviabiliza a permanência do elemento dental na cavidade bucal. A etiologia da reabsorção radicula...
Revista da Faculdade de Odontologia de Porto Alegre. Open Journal Systems. Ajuda do sistema. Usuá... more Revista da Faculdade de Odontologia de Porto Alegre. Open Journal Systems. Ajuda do sistema. Usuário Login, Senha, Lembrar usuário. Idioma Español (España). Conteúdo da revista Pesquisa. Todos. ...
The purpose of this study was to investigate the influence of Nd:YAG on microtensile bond strengt... more The purpose of this study was to investigate the influence of Nd:YAG on microtensile bond strength (microTBS) of different adhesive systems for human dentin. Lasers have been widely used in dentistry. New adhesive systems with different chemical compositions are introduced every year, and it is important to investigate the bonding of new adhesive systems to dentin irradiated with laser. The occlusal surfaces of third molars were removed to obtain flat dentin surfaces. The teeth were randomly divided into six groups. Each adhesive system was applied, according to manufacturers&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39; instructions, to surface dentine with and without Nd:YAG laser irradiation (0.9 W, 15 Hz, 60 mJ per pulse). A block of composite resin was built over the adhesive layer. The specimens were sectioned to obtain 0.70 x 0.70 mm of transversal section. Twenty test specimens were selected for each group, and were then submitted to microTBS on a universal testing machine. According to Student&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s t-test, for Single Bond, there was no statistically significant difference without (49.32 MPa) and with (47.34 MPa) laser application (p = 0.60). For the Tyrian SPE/One Step Plus, microTBS value with laser (27.09 MPa) was statistically higher than without laser (19.13 MPa), as well as for Adper Prompt L-Pop (22.85 and 13.78 Mpa; p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; or = 0.01). The application of Nd:YAG laser to dentin provided an increase in the bond strength values for the Tyrian SPE/One Step Plus and Adper Prompt L-Pop adhesive systems, but did not influence the bond strength values of the Single Bond adhesive system.
All-ceramic crowns and veneers have been used extensively in prosthodontics with proven clinical ... more All-ceramic crowns and veneers have been used extensively in prosthodontics with proven clinical success. The development of new reinforced ceramics has led to a broader range of indications. Traditional veneer preparations are now often replaced with extended defect-oriented preparation designs, ie, extended veneers. However, although extended veneers can serve as an alternative to full- crown preparations, they are not the best choice for all clinical situations. Choosing correctly between all-ceramic crowns and extended veneers when restoring the anterior dentition is crucial to achieving a conservative and long-lasting treatment. This article addresses key evidence-based considerations regarding the rehabilitation of the anterior dentition using all-ceramic crowns and veneers. Further, a case report involving both types of restorations is presented.
There is little information in the literature regarding the relationship between preparations mad... more There is little information in the literature regarding the relationship between preparations made for direct and indirect veneers and the loss of tooth structure required for each technique. This in vitro study sought to quantify the different mass losses from preparation techniques used for direct and indirect veneers. Thirty artificial teeth were weighted using a digital balance and placed in a dental manikin in the position corresponding to the right maxillary central incisor. Five clinicians-all experts in esthetic dentistry-were asked to perform conventional preparations for both a direct composite resin veneer and an indirect ceramic veneer. After preparations, specimens were weighted again in the same digital balance. Teeth undergoing veneer preparations demonstrated a statistically significant mass loss compared to unprepared teeth. Indirect ceramic veneer preparations produced more mass loss than direct composite veneer preparations (P < 0.01).
The aim of this in vitro study was to evaluate the microtensile bond strength (µTBS) of a low-shr... more The aim of this in vitro study was to evaluate the microtensile bond strength (µTBS) of a low-shrink silorane-based composite (Filtek Silorane) and a methacrylate-based composite (Filtek Z250) to the bottom dentin of a Class I cavity using different placement techniques. Twelve third molars were used. Standard, box-type Class I cavities (6.0 x 4.0 x 2.5 mm) were prepared at the occlusal crown center, with the pulpal floor ending approximately at the midcoronal dentin. The teeth were then randomly divided into four groups, according to each placement technique: ZI--Filtek Z250 placed incrementally; ZB--Filtek Z250 placed in bulk; SI--Filtek Silorane placed incrementally; and SB--Filtek Silorane placed in bulk. Each restored third molar was subjected to microtensile bond testing after 24 hours of storage in distilled water at 37 degrees C. After storage, each molar was longitudinally sectioned in both axes to obtain rectangular sticks with an approximate 0.49 mm2 cross-sectional area....
The purpose of this study was to investigate the influence of Nd:YAG on microtensile bond strengt... more The purpose of this study was to investigate the influence of Nd:YAG on microtensile bond strength (microTBS) of different adhesive systems for human dentin. Lasers have been widely used in dentistry. New adhesive systems with different chemical compositions are introduced every year, and it is important to investigate the bonding of new adhesive systems to dentin irradiated with laser. The occlusal surfaces of third molars were removed to obtain flat dentin surfaces. The teeth were randomly divided into six groups. Each adhesive system was applied, according to manufacturers&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39; instructions, to surface dentine with and without Nd:YAG laser irradiation (0.9 W, 15 Hz, 60 mJ per pulse). A block of composite resin was built over the adhesive layer. The specimens were sectioned to obtain 0.70 x 0.70 mm of transversal section. Twenty test specimens were selected for each group, and were then submitted to microTBS on a universal testing machine. According to Student&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s t-test, for Single Bond, there was no statistically significant difference without (49.32 MPa) and with (47.34 MPa) laser application (p = 0.60). For the Tyrian SPE/One Step Plus, microTBS value with laser (27.09 MPa) was statistically higher than without laser (19.13 MPa), as well as for Adper Prompt L-Pop (22.85 and 13.78 Mpa; p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; or = 0.01). The application of Nd:YAG laser to dentin provided an increase in the bond strength values for the Tyrian SPE/One Step Plus and Adper Prompt L-Pop adhesive systems, but did not influence the bond strength values of the Single Bond adhesive system.
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