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1.
Niger J Clin Pract ; 23(9): 1312-1317, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32913173

RESUMO

Objective: The present study compared the ability of bleaching, resin infiltration and microabrasion to restore the appearance of existing white spot lesions (WSL) on tooth surfaces as close as possible to that of the original healthy enamel. Materials and Methods: Sixty extracted human teeth with WSL were randomly assigned to three treatment groups (20/group). Prior to treatment, the colour of the surrounding healthy enamel and the WSL were measured as the baseline and pre-treatment (PreRX) colours respectively using spectrophotometer based on CIE L*A*B. The L-value was used for the statistical comparison. WSLs in each group were treated respectively by bleaching, infiltration or microabrasion following the manufacturer's instructions. Colour measurement was repeated after treatment. Both intragroup and intergroup comparisons were performed using ANOVA followed by Tukey's multiple comparison test (α=0.05). Result: In all groups the mean L-values were significantly higher in PreRX WSL (P < 0.01; Tukey) compared to baseline (sound enamel). After treatment the difference in mean L-value between baseline and WSL increased significantly (P < 0.01, Tukey) in Bleaching and Microabrasion groups by 1.4% and 1% respectively, but decreased in Infiltration group by 3.4%. Thus resin infiltration decreased the L-value of the WSL, bringing it closer to the L-value of the sound enamel while bleaching and microabrasion increased the L-value. Conclusions: Among the three treatment modalities investigated in this study, resin infiltration was the most effective in masking the WSLs.


Assuntos
Cárie Dentária/terapia , Microabrasão do Esmalte , Estética Dentária , Resinas Sintéticas/uso terapêutico , Clareamento Dental/métodos , Biometria , Cárie Dentária/patologia , Humanos , Resinas Sintéticas/química , Espectrofotometria , Descoloração de Dente , Resultado do Tratamento
2.
Int J Prosthodont ; 33(1): 105-110, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31860920

RESUMO

Enamel hypoplasia occurs because of a defect in formation of the organic matrix during the development of tooth enamel. Minimally invasive procedures of the slightly altered enamel contribute to a greater longevity of teeth and prevent them from relapsing into the repetitive restorative cycle. This case history report aimed to show a sequential technique of minimally invasive procedures for esthetic resolution in anterior teeth. Prior to microabrasion, anterior teeth were bleached in office with 37% hydrogen peroxide. Afterwards, hypoplastic spots on the buccal incisal thirds of the maxillary central incisors were treated with two sessions of microabrasion using phosphoric acid and pumice stone and one session using resin infiltrant. Besides a slight remaining white spot on tooth 21, the masking of spots was done with this sequence of treatments, re-establishing color harmony. Spot depth, diagnosis, and the most relevant treatment choice determined the clinical success.


Assuntos
Hipoplasia do Esmalte Dentário , Clareamento Dental , Descoloração de Dente , Esmalte Dentário , Microabrasão do Esmalte , Estética Dentária , Humanos
3.
Braz. dent. sci ; 23(3): 1-7, 2020. ilus, tab
Artigo em Inglês | LILACS, BBO - Odontologia | ID: biblio-1117355

RESUMO

Aim: To determine the prevalence, predisposing factors of white spots on enamel and the effectiveness of treatment using the microabrasion technique. Method: A study was developed in children between the ages of 6 and 12 of both genders, enrolled in municipal public schools. Epidemiological questionnaire was applied to the participants and parents or guardians to investigate the predisposing factors of the lesions on permanent teeth during the mixed dentition. Oral examination of the children was carried out, and for those children in whom white spot lesions were found, dental treatment was provided by the microabrasion technique in the incisors and/ or first permanent molars to prevent the evolution to a caries lesion with cavitation, since the enamel structure was damaged. Results: The majority of the sample had from 1% to 24% of the enamel affected by the white spots. The possible predisposing factors of white spots were systemic infections, trauma or caries with pulp involvement in a deciduous tooth. The treatment was effective in 16 children and for the remaining two the restorative treatment was performed. Conclusion: The prevalence of white spot lesions found in enamel was 3.95%, with a higher prevalence in females. Regarding predisposing factors, most children had some infectious diseases and frequently took antibiotics and anti inflammatory drugs. The permanent right upper central incisor was the most affected. The treatment proved to be effective in most children possibly because the lesion is located more superficially in the enamel (AU)


Objetivo: Determinar a prevalência, os fatores predisponentes de manchas brancas no esmalte dentário e a eficácia do tratamento pela técnica de microabrasão. Método: Foi desenvolvido um estudo em crianças na faixa etária dos 6 aos 12 anos de ambos os gêneros, matriculados em 3 escolas públicas municipais. Questionário epidemiológico foi aplicado aos participantes e aos pais ou responsáveis para investigar os fatores predisponentes das lesões em dentes permanentes durante a dentição mista. Realizou-se o exame bucal das crianças e nas que foram constatadas lesões de mancha branca foi proporcionado o tratamento odontológico pela técnica de microabrasão, nos incisivos e/ou primeiros molares permanentes, impedindo a evolução para uma lesão de cárie com cavitação, uma vez que a estrutura do esmalte estava danificada. Resultados: A maioria da amostra apresentou de 1% a 24% do esmalte atingido pelas manchas brancas. Os possíveis fatores etiológicos das manchas brancas foram infecções sistêmicas, trauma ou cárie com envolvimento pulpar em dente decíduo. O tratamento foi eficaz em 16 crianças e em duas restantes foi realizado o tratamento restaurador. Conclusão: A prevalência de lesões de manchas brancas encontradas em esmalte foi 3.95% com maior predominância no gênero feminino. Com relação aos fatores predisponentes, a maioria das crianças tiveram algumas doenças infecciosas e fizeram uso de antibióticos e anti-inflamatórios. O incisivo central superior direito permanente foi o mais acometido. O tratamento mostrou-se eficaz na maioria das crianças, possivelmente devido à localização da lesão ser superficial no esmalte (AU)


Assuntos
Humanos , Masculino , Feminino , Criança , Desmineralização do Dente , Microabrasão do Esmalte , Esmalte Dentário , Hipoplasia do Esmalte Dentário
4.
Pan Afr Med J ; 34: 72, 2019.
Artigo em Francês | MEDLINE | ID: mdl-31819788

RESUMO

Dental fluorosis is a developmental anomaly affecting aesthetic appearance. The association between microabrasion and external bleaching has shown satisfactory outcomes because it improves aesthetic outcome in patients with light dental fluorosis. The purpose of this study was to update the role of this association as well as its different effects on the enamelled surface.


Assuntos
Microabrasão do Esmalte/métodos , Fluorose Dentária/complicações , Clareamento Dental/métodos , Humanos
5.
BMC Oral Health ; 19(1): 247, 2019 11 14.
Artigo em Inglês | MEDLINE | ID: mdl-31727047

RESUMO

BACKGROUND: The aim of the present investigation was to evaluate enamel reduction efficiency, abrasive property decay, and enamel effects between oscillating mechanical and manual systems for interproximal enamel reduction (IPR). METHODS: Three oscillating strips and three manual strips were tested on twelve freshly extracted premolars blocked in an acrylic cylinder pot by means of a material testing machine. Each strip underwent one test of 8 cycles (30 s each). Both abrasive tracks and teeth surfaces were qualitative evaluated before and after IPR by means of SEM analysis. Efficiency and abrasive property decay of both IPR systems were investigated by the amount of enamel reduction within the eight-cycle testing. Independent t-test was used to evaluate differences in variables between the two systems. RESULTS: Mechanical IPR system showed higher efficiency in terms of enamel reduction (p < 0.005) when compared with manual IPR system (0.16 mm and 0.09 mm, respectively). Quantity of removed enamel decreased throughout the 8 cycles for both systems. Less presence of enamel debris and detachment of abrasive grains were observed on mechanical strips rather than manual strips. SEM analysis revealed more regular surface of teeth undergone mechanical IPR procedures. CONCLUSION: Oscillating diamond strips showed more controlled efficiency when compared with the manual IPR system leading to a more regular enamel surface.


Assuntos
Esmalte Dentário/efeitos dos fármacos , Diamante , Microabrasão do Esmalte/métodos , Dente Pré-Molar , Esmalte Dentário/patologia , Esmalte Dentário/ultraestrutura , Microabrasão do Esmalte/instrumentação , Humanos , Teste de Materiais , Microscopia Eletrônica de Varredura , Propriedades de Superfície
6.
Br Dent J ; 226(7): 486-489, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30979997

RESUMO

Objectives The aim of this article is to present an easy to use, conservative method for managing discolouration in enamel in general practice. Materials and methods Microabrasion was used in this case to remove superficial layers of discoloured enamel utilising abrasive acids, which was further improved by using ICON, a newly developed resin infiltrant. Results Significant improvement shown by the presented case suggests that this modality of treatment could be used more frequently. Discussion This simple yet extremely effective treatment can be used by the general dental practitioner despite not having the necessary equipment as readily available alternatives can be used. Conclusion Using minimally invasive options in managing superficial enamel lesions can be effective and prevent the use of invasive procedures in the first instance.


Assuntos
Microabrasão do Esmalte , Descoloração de Dente , Esmalte Dentário , Humanos
7.
Rev. Cient. CRO-RJ (Online) ; 4(1): 79-86, Jan.-Apr. 2019.
Artigo em Inglês | LILACS, BBO - Odontologia | ID: biblio-1024238

RESUMO

Introduction: Dental fluorosis is an enamel alteration characterized with opaque stains caused by high exposures to fluoride during the dentition development. Aim : This in vitro study aimed to evaluate changes in the enamel surface of sound human teeth after three treatment protocols for dental fluorosis: microabrasion with 37% phosphoric acid and pumice, home bleaching with 10% carbamide peroxide, and a combination of these techniques. Methods : Thirty-eight specimens (5×5×2 mm) with enamel surface were obtained from 19 third molars. Thirty six specimens were randomized into three treatment groups (n= 12): MAB- enamel microabrasion; CP10- home bleaching; MAB+CP10- a combination of these techniques and two specimens not received treatment. Surface roughness and microhardness analyses were performed before and after treatment protocols. Two representative specimens from each group were evaluated by scanning electron microscopy (SEM). Analysis of variance and Tukey's tests were used for data analysis (p< 0.05). Results : All treatment protocols promoted an increased in enamel surface roughness (p< 0.02). MAB and MAB+CP10 showed a significant increase in the enamel microhardness (p< 0.04), while CP10 showed a microhardness lower than MAB and MAB+CP10 (p< 0.05). SEM images demonstrated a smoother surface from MAB and MAB+CP10 and, an irregular pattern of enamel erosion from CP10. Conclusions : The treatment protocols for dental fluorosis tested significantly changed the enamel roughness, microhardness and micromorphology.


Introdução: A fluorose dentária é uma alteração do esmalte caracterizada por manchas opacas causadas pela alta exposição aos íons fluoreto durante o desenvolvimento dentário. Objetivo : Este estudo in vitro objetivou avaliar mudanças na superfície do esmalte em dentes humanos hígidos após três protocolos de tratamento para a fluorose dentária: microabrasão com ácido fosfórico a 37% e pedra-pomes, clareamento caseiro com peróxido de carbamida a 10% e a associação destas técnicas. Métodos : Trinta e oito espécimes (5×5×2 mm) com superfície em esmalte foram obtidos a partir de 19 terceiros molares, sendo que dois não receberam tratamento e, trinta e seis foram randomizados em três grupos (n= 12): MAB- microabrasão do esmalte; CP10- clareamento caseiro; e MAB+CP10- associação destas técnicas. A rugosidade superficial e microdureza foram realizadas antes e após os protocolos de tratamento. Dois espécimes representativos de cada grupo foram avaliados por microscopia eletrônica de varredura (MEV). A análise de variância e teste de Tukey foram utilizados para análise dos resultados (p< 0,05). Resultados : Todos os protocolos de tratamento promoveram um aumento da rugosidade superficial do esmalte (p< 0,02). MAB e MAB+CP10 mostraram um aumento significativo da microdureza do esmalte (p< 0,04), enquanto que CP10 mostrou uma menor microdureza comparado ao MAB e ao MAB+CP10 (p< 0,05). As imagens de MEV demonstraram uma superfície mais lisa do MAB e MAB+CP10 e um padrão irregular do esmalte erodido para o CP10. Conclusão : Os protocolos testados para tratamento da fluorose dentária testados modificaram significativamente a rugosidade, microdureza e micromorfologia do esmalte.


Assuntos
Fluorose Dentária , Dente , Clareamento Dental , Humanos , Protocolos Clínicos , Microabrasão do Esmalte , Esmalte Dentário
8.
Angle Orthod ; 89(3): 372-377, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30719932

RESUMO

OBJECTIVE: To compare the esthetic improvement between postorthodontic white-spot lesions (WSLs) treated by resin infiltration and microabrasion for 12 months. MATERIALS AND METHODS: A total of 20 patients with 128 teeth with postorthodontic WSLs were recruited. A simple randomized, split-mouth, positive controlled design was used to allocate patients to resin infiltration or microabrasion groups. The lesion area ratio (R value) was calculated between the area of a WSL and the labial surface of the corresponding tooth based on standardized clinical photographs. The color change (ΔE) of each tooth was measured with a Crystaleye spectrophotometer (Olympus, Tokyo, Japan). Every measurement was taken before treatment (T0) and at different time points after treatment: 1 week (T1), 6 months (T6), and 12 months (T12). RESULTS: A total of 16 patients with 108 trial teeth were available at T12. Each group had 54 trial teeth. In both groups, there was a significant decrease in R value and ΔE between T1 and T0 (P < .0001). In the infiltration group, the R value and ΔE had no significant changes over time from T1 to T12. In the microabrasion group, the R value and ΔE decreased significantly from T1 to T6. The R value of resin infiltration was lower when compared with microabrasion at every recall point (P < .001). The ΔE had no significant differences between the two groups at any timepoint. CONCLUSIONS: Resin infiltration and microabrasion improved the esthetic appearance of WSLs and showed sufficient durability for 12 months. Resin infiltration showed a better esthetic improvement effect when compared with microabrasion at 12 months.


Assuntos
Cárie Dentária , Microabrasão do Esmalte , Cor , Esmalte Dentário , Estética Dentária , Humanos , Japão , Boca , Resinas Sintéticas
9.
Dent Mater J ; 38(2): 295-302, 2019 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-30713284

RESUMO

This study aimed to evaluate color masking effect from treatments with resin infiltrant and two different remineralization agents applied with microabrasion to anterior teeth with developmental enamel defects. The incisors of patients aged 8-17 were evaluated. The study involved two groups including fluorosis (Group 1) and hypomineralization (Group 2) cases. These two groups were further divided based on the treatment received: Group A: Icon®, Group B: Opalustre®+Clinpro White Varnish®, and Group C: Opalustre®+Tooth Mousse®. The spectrophotometric values were recorded. Furthermore, the L* and ΔE values were evaluated by repeated measures of ANOVA. The largest increase in L* values over time after treatment was in Group 1A, followed by Group 1C and Group 1B. The largest increase in ΔE values over time after treatment was in Group 1A. Clinically observable difference was achieved as a result of all treatment groups. Especially resin infiltration treatment has been found to be more effective in teeth with fluorosis.


Assuntos
Cárie Dentária , Microabrasão do Esmalte , Adolescente , Criança , Cor , Esmalte Dentário , Humanos , Resinas Sintéticas
10.
Oper Dent ; 44(6): 566-573, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30702410

RESUMO

The present clinical case report describes the clinical steps of enamel microabrasion associated with dental bleaching to restore severely-pitted fluorosed teeth. The process of removing the fluorotic superficial stains started by using macroabrasion with a water-cooled fine tapered 3195 FF diamond bur. Rubber dam isolation of the operative field was used to remove the remaining enamel stains and superficial irregularities with the Opalustre microabrasive compound (6.6% hydrochloric acid associated with silicon carbide particles) followed by polishing using fluoridated paste and subsequent 2% neutral fluoride gel topical application. After one month, dental bleaching was performed using 10% carbamide peroxide in custom-formed acetate trays for two hours/day for 42 days. The association of enamel microabrasion with dental bleaching was effective for reestablishing the dental esthetics of a patient with severe dental fluorosis.


Assuntos
Fluorose Dentária , Clareamento Dental , Descoloração de Dente , Esmalte Dentário , Microabrasão do Esmalte , Humanos
11.
Rev. ADM ; 76(1): 30-37, ene.-feb. 2019. ilus, tab
Artigo em Espanhol | LILACS | ID: biblio-995811

RESUMO

La odontología de mínima invasión se ha convertido en la filosofía de tratamiento dental más aceptada en la actualidad. La posibilidad de incorporarla se ha debido en gran medida a la aparición de nuevos materiales dentales que se adhieren a la estructura dental, a técnicas más conservadoras de estructura dental sana y sobre todo a una nueva forma de pensar tanto de clínicos como de los mismos pacientes. La odontología estética contemporánea se ha visto infl uenciada por este nuevo paradigma. El tratamiento de pigmentaciones dentales también se ha visto benefi ciado por esta nueva tendencia y nuevos materiales han aparecido recientemente que conservan la mayor cantidad de tejido dental sano sin necesidad de preparaciones no conservadoras. Lo más importante al incorporar estas nuevas tecnologías es la realización de un diagnóstico adecuado entendiendo la causa que origina esta condición y así poder implementar el mejor tratamiento posible (AU)


Minimally invasive dentistry has become the standard of care most widely accepted today. This trend has been posible in great extent to the advent of new dental materials that adhere to dental structure, more conservative techniques of healthy dental tissue but mainly from clinicians and patients with a new way of thinking. Contemporary esthetic dentistry has been influenced by this new paradigm. Treatment of dental stainings has also been infl uenced by this new trend and new materials have recently surfaced that keep healthy dental tissue without the need of non conservative preparations. The most important aspect in order to incorporate this new technologies is a correct diagnosis understanding the cause that originated this condition in order to implement the best posible treatment (AU)


Assuntos
Humanos , Descoloração de Dente/terapia , Microabrasão do Esmalte , Estética Dentária , Clareamento Dental , Materiais Biocompatíveis , Hidróxido de Cálcio , Polimento Dentário , Restauração Dentária Permanente , Ácido Clorídrico , Fluorose Dentária/terapia
12.
Clin Oral Investig ; 23(1): 321-326, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29679230

RESUMO

OBJECTIVES: The present dental bleaching case report describes a new method that precisely quantifies the daily wearing-times of the bleaching product by inserting a microsensor in the acetate custom tray. The bleaching efficacy was also discussed since the patient was previously submitted to enamel microabrasion. METHODS: The patient was submitted to enamel microabrasion in 1987, and bleaching treatment was performed in 2005. In 2017, re-bleaching was executed using 10% peroxide carbamide. The electronic microsensor, TheraMon (TheraMon® microelectronic system; Sales Agency Gschladt, Hargelsberg, Austria), was embedded in the labial region of the upper and lower acetate trays to evaluate the wearing-times of the acetate trays/bleaching product. The patient was instructed to wear the tray for 6 to 8 h/day while sleeping. After 24 days of bleaching treatment, the data obtained from the TheraMon electronic devices was collected and interpreted. RESULTS: The patient did not entirely follow the bleaching treatment as recommended, as there was no evidence of use of the upper and lower trays for some days; additionally, the bleaching product was used for shorter and longer periods than was instructed. CONCLUSIONS: The TheraMon microeletronic device precisely measured the wearing-times of the acetate tray/bleaching product during the bleaching treatment. Teeth submitted to enamel microabrasion presented with a healthy clinical appearance after 30 years. CLINICAL SIGNIFICANCE: Measuring the length and frequency of use of an acetate tray/bleaching product can be important to clinicians and patients for obtaining a controlled and adequate bleaching treatment.


Assuntos
Microabrasão do Esmalte , Cooperação do Paciente , Clareamento Dental/métodos , Adolescente , Feminino , Humanos , Tecnologia de Sensoriamento Remoto
13.
Braz. j. oral sci ; 18: e191663, jan.-dez. 2019. ilus
Artigo em Inglês | LILACS, BBO - Odontologia | ID: biblio-1095340

RESUMO

Color changes may interfere with smile balance and they represent a clinical challenge to dentists. Dental fluorosis originates from intrinsic factors and it is a disorder of enamel formation during the phase of teeth development, resulting in the change of enamel color. This clinical case report aimed to present the resolution of a case of dental fluorosis through the association of minimally invasive techniques, namely microabrasion and tooth bleaching. A 27-year-old male patient sought the dental clinic of the School of Dentistry of Piracicaba (FOP - UNICAMP, Brazil) presenting striped and symmetrical white stains and generalized chromogenic biofilm. After anamnesis and clinical examination, the patient was diagnosed with fluorosis stains. Initially, adequacy of the oral environment was performed with prophylaxis and supragingival scraping. Then, the enamel microabrasion technique was performed with 6% hydrochloric acid associated with silicon carbide (Whiteness RM - FGM) and supervised at-home bleaching was performed with 16% carbamide peroxide (Whiteness Simple 16% - FGM). In conclusion, the treatment performed reestablished the aesthetics and harmony of smile color with minimally invasive procedures without causing tooth sensitivity


Assuntos
Humanos , Masculino , Adulto , Clareamento Dental , Microabrasão do Esmalte , Estética Dentária , Fluorose Dentária
14.
Rev. Salusvita (Online) ; 38(3): 821-836, 2019.
Artigo em Português | LILACS | ID: biblio-1052289

RESUMO

Introdução: A microabrasão proporciona a remoção de manchas e irregularidades na superfície do esmalte, através da associação da ação erosiva de ácidos, como o ácido fosfórico ou ácido clorídrico, e a ação abrasiva de substâncias como pedra pomes (carbeto de silício), por meio de esfregaço. O sucesso da técnica depende da profundidade do esmalte manchado, sendo mais facilmente removidas as manchas situadas mais externamente nas camadas do esmalte. Objetivo: Este trabalho tem como objetivo avaliar a partir de uma revisão de literatura a eficácia e aplicabilidade desse método no tratamento clínico, analisando o potencial de resolutividade segundo os estudos que fundamentam sua eficiência. Materiais e Métodos: Foi realizada uma revisão bibliográfica nas bases de dados Bireme, Pubmed e Google acadêmico, abrangendo artigos de pesquisa e de relato de caso de 2013 a 2018, utilizando os descritores: Esmalte dentário, Microabrasão do esmalte, Fluorose dentária, Amelogênese imperfeita. Conclusão: Verificou-se que a microabrasão do esmalte dentário é uma alternativa eficaz no tratamento de alterações cromáticas localizadas na camada superficial do esmalte, tendo em vista que, além de ser um método conservador, promove resultados satisfatórios imediatamente após sua aplicação, entretanto, para o tratamento de alterações de maior profundidade, pode ser necessário associar a técnica da microabrasão a outros procedimentos estéticos.


Introducion: Microabrasion provides the removal of stains and irregularities on the surface of the enamel by associating the erosive action of acids, such as phosphoric acid or hydrochloric acid, and the abrasive action of substances such as pumice (silicon carbide) by smearing. Objective: This study aims to evaluate, by way of a literature review, the efficacy and applicability of this method in clinical treatment, analyzing the potential of resolution according to studies that support its efficiency. Materials and Methods: A bibliographic review was conducted in the databases Bireme, Pubmed and Google Scholar, covering research articles and case reports from 2013 to 2018, using the descriptors: Dental Enamel, Enamel microabrasion, Dental Fluorosis, Amelogenesis imperfecta. Conclusion: It was verified that the microabrasion of the dental enamel is an effective alternative in the treatment of localized chromatic alterations in the superficial layer of the enamel considering that, besides being a conservative method, it promotes satisfactory results immediately after its application. However, for the treatment of alterations of greater depth, it may be necessary to associate the microabrasion technique with other aesthetic procedures.


Assuntos
Esmalte Dentário , Microabrasão do Esmalte , Fluorose Dentária
15.
J Contemp Dent Pract ; 19(7): 762-767, 2018 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-30066677

RESUMO

AIM: To evaluate the effect of different stain removal protocols with or without topical fluoride application on the bond strength of orthodontic brackets to enamel. MATERIALS AND METHODS: Eighty extracted premolars were randomly assigned into four groups according to the stain removal protocol. The stain removal protocols were (1) using rubber cup with prophylaxis paste in (G1, n = 20), (2) air-abrasion with prophy-jet polishing system (G2, n = 20), (3) micro-abrasion with opalusture polishing paste (G3, n = 20), and (4) macro-abrasion with ultrafine diamond finishing tips (G4, n = 20). Ten teeth in each group (SG1, n = 10) had no topical fluoride treatment after stain removal protocol, while the rest (SG2, n = 10) were subjected to topical fluoride application. After bonding the orthodontic brackets, all specimens were thermocycled before testing their bracket-enamel bond strength. The debonded bracket and enamel surfaces of each specimen were also assessed to determine the adhesive remnant index (ARI) for each subgroup. RESULTS: Specimens in G2, G3, and G4 recorded lower shear bond strength as compared with G1 (p < 0.05). For all groups, specimens in SG2 demonstrated lower bond strength than their counterpart in SG1 (p < 0.05). No significant differences were detected between the ARIs of different subgroups (p > 0.05). CONCLUSION: Bonding orthodontic brackets is affected by the protocol of removing enamel stains. The use of the rubber cup with prophylaxis paste provided the highest bracket-enamel bond strength. Topical fluoride application usually complicates the bonding process of orthodontic brackets to cleaned enamel surfaces. CLINICAL SIGNIFICANCE: The results of the current study indicate higher bracket bond strength to enamel surfaces treated with different stain removal protocols than the clinically acceptable values (5.9-7.8 MPa). However, the more aggressive enamel pretreatment methods should not be considered unless the clinical situation necessitates such action. Postponing the topical fluoride application is advisable to follow the bracket bonding procedure. This action would prevent the negative effect of topical fluorides on bracket-enamel bond strength.


Assuntos
Colagem Dentária , Esmalte Dentário , Placa Dentária/terapia , Braquetes Ortodônticos , Resistência ao Cisalhamento , Descoloração de Dente/terapia , Microabrasão do Esmalte , Fluoretos Tópicos/administração & dosagem , Humanos
16.
Int J Esthet Dent ; 13(3): 394-403, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30073220

RESUMO

This study evaluated the effectiveness of resin infiltration or enamel microabrasion for restoring color changes caused by incipient carious lesions as well as the color stability achieved by these treatments. Enamel specimens were subjected to cariogenic challenge to produce white spot lesions (WSLs) using a microcosm biofilm model. These lesions were treated with resin infiltration or enamel microabrasion (n = 8), and color changes were measured with a spectrophotometer at baseline and after the treatments. Untreated specimens were used as a control. The treated specimens were then immersed in coffee for 1 week, and tooth color was measured again. Data for ΔL*, Δa*, Δb*, and ΔE were analyzed by two-way repeated measures ANOVA and Tukey's test (α = 0.05). Caries induction resulted in significant color changes, mainly decreased lightness. Neither resin infiltration nor enamel microabrasion were able to restore tooth color. The specimens subjected to resin infiltration and the control specimens were more susceptible to color changes following immersion in coffee. In conclusion, enamel microabrasion and resin infiltration were unable to restore the initial tooth color observed prior to WSL induction. Moreover, resin-infiltrated enamel seems more susceptible to staining solutions than enamel subjected to microabrasion.


Assuntos
Resinas Compostas/química , Microabrasão do Esmalte , Desmineralização do Dente/terapia , Descoloração de Dente/terapia , Animais , Bovinos , Cor , Cárie Dentária/terapia , Estética Dentária , Técnicas In Vitro , Incisivo , Distribuição Aleatória , Espectrofotometria , Propriedades de Superfície
17.
Braz Dent J ; 29(2): 109-116, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29898055

RESUMO

This study aimed to evaluate the effect on oral health-related quality of life (OHRQoL) of two treatment protocols for dental fluorosis in individuals enrolled in a randomized clinical trial. Seventy volunteers, who lived in a fluorosis endemic area in Brazil, and had at least four maxillary anterior teeth showing fluorosis with a Thylstrup and Fejerskov index from 1 to 7, were randomized into two treatment groups (n= 35): GI- enamel microabrasion; or GII- microabrasion associated with at-home bleaching. Microabrasion was performed using 37% phosphoric acid and pumice, and at-home tooth bleaching with 10% carbamide peroxide in a tray. Volunteers completed a questionnaire at baseline and 1-month post treatment to assess changes in OHRQoL, using the Oral Impact on Daily Performance (OIDP). Differences in overall impact scores between and within treatment groups were analyzed with Wilcoxon (within) and Mann-Whitney (between) tests. Changes in performance scores were analyzed using Wilcoxon tests (a< 0.05). One month after treatment, subjects reported improvement in OHRQoL. Both groups showed lower OIDP scores (p< 0.001), but there was no difference between them. Eating, cleaning teeth, smiling and emotional state performance scores were lower after treatment for the whole sample. In conclusion, the treatment with microabrasion improved the OHRQoL in this sample of individuals living in a fluorosis endemic area regardless of the addition of at-home bleaching.


Assuntos
Peróxido de Carbamida/administração & dosagem , Microabrasão do Esmalte/métodos , Fluorose Dentária/tratamento farmacológico , Saúde Bucal , Ácidos Fosfóricos/administração & dosagem , Qualidade de Vida , Silicatos , Clareamento Dental/métodos , Adolescente , Adulto , Brasil/epidemiologia , Peróxido de Carbamida/uso terapêutico , Doenças Endêmicas , Feminino , Fluorose Dentária/epidemiologia , Fluorose Dentária/psicologia , Humanos , Masculino , Ácidos Fosfóricos/uso terapêutico , Inquéritos e Questionários , Adulto Jovem
18.
J Prosthet Dent ; 120(3): 323-326, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-29724552

RESUMO

Dental fluorosis is a condition that produces unesthetic coloration of enamel because of excessive fluoride ingestion during enamel formation. Its appearance can range in severity from mildly white and opaque to dark brown and can lead a patient to seek dental treatment. Historically, these lesions have been masked, either with direct or indirect restorations, but more conservative treatment options are now available, including the combination of microabrasion and bleaching. This clinical report describes the use of these treatment options to address a young patient's dental fluorosis.


Assuntos
Microabrasão do Esmalte/métodos , Estética Dentária , Fluorose Dentária/terapia , Clareamento Dental/métodos , Tratamento Conservador/métodos , Feminino , Humanos , Adulto Jovem
19.
Acta Odontol Scand ; 76(7): 473-481, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29447057

RESUMO

OBJECTIVE: The effects of resin infiltration and microabrasion on incipient carious lesions by surface microhardness, roughness and morphological assessments, and resistance to further acid attack of treated lesions were evaluated. MATERIAL AND METHODS: Eighty artificially-induced incipient lesions were randomly divided into five groups (n = 16): resin infiltration with an adhesive resin (Excite F, Ivoclar Vivadent, Schaan, Liechtenstein), resin infiltration with a resin infiltrant (Icon, DMG, Hamburg, Germany), microabrasion without polishing (Opalustre, Ultradent, South Jordan, UT, USA), microabrasion with polishing (Opalustre, Ultradent, Diamond Excel, FGM, Joinville, SC, Brazil), and distilled water (control group). All specimens were exposed to demineralization for another 10 d. Microhardness, roughness and morphological assessments were done at baseline, following initial demineralization, treatment and further demineralization. Data were analysed by the Kruskal-Wallis, Friedman's and Bonferroni tests (p < .05). RESULTS: Enamel lesions treated with resin infiltrant and microabrasion demonstrated similar hardness values, with a nonsignificant difference compared with sound enamel. Resin infiltration demonstrated lower roughness values than those of microabrasion, and the values did not reach the values of sound enamel. Further demineralization for 10 d did not affect the hardness but increased the roughness of infiltrated and microabraded enamel surfaces. Polishing did not influence the roughness of microabraded enamel surfaces. After resin infiltration, porosities on enamel were sealed completely. The surface structure was similar to that of the enamel conditioning pattern for microabraded enamel lesions. CONCLUSIONS: Within the limitations of this study, the icon infiltration and microabrasion technique appeared to be effective for improving microhardness. Icon appeared to provide reduced roughness, although not equal to sound enamel. Further research is needed to elucidate their clinical relevance.


Assuntos
Cárie Dentária/terapia , Esmalte Dentário/fisiopatologia , Microabrasão do Esmalte , Propriedades de Superfície , Resinas Acrílicas , Resinas Compostas , Cárie Dentária/fisiopatologia , Dureza , Humanos , Poliuretanos , Distribuição Aleatória
20.
Aust Endod J ; 44(3): 235-239, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28940976

RESUMO

The aim of this study was to evaluate the fracture resistance of simulated immature teeth after internal bleaching. The teeth were assigned as follows (n = 12/group); Group-1: The pulp chamber was filled with ProRootMTA and bleached intracoronally with sodium perborate mixed with 37% carbamide peroxide gel; Group-2: The pulp chamber was filled with ProRootMTA without bleaching; Group-3: The pulp chamber was filled with Biodentine and bleached intracoronally as Group-1; Group-4: The pulp chamber was filled with Biodentine without bleaching; and Group-5: Teeth received no intervention (control). The specimens were loaded vertically until root fracture occurred. The data were analysed with Kruskal-Wallis and Dunn tests. There was no significant difference between the fracture resistances of the experimental groups (P > 0.05). However, all experimental groups had significantly lower fracture resistance than the control group (P < 0.05). Neither the tested calcium silicate cements nor the bleaching procedures had a significant impact on fracture resistance values.


Assuntos
Materiais Dentários/química , Cavidade Pulpar/efeitos dos fármacos , Microabrasão do Esmalte/métodos , Fraturas dos Dentes/prevenção & controle , Modelos Dentários , Humanos , Teste de Materiais , Sensibilidade e Especificidade , Dente Decíduo/efeitos dos fármacos
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