Hall technique in pediatric patients: case study and clinical-radiographic follow-up

A técnica de Hall é um método restaurador atraumático para molares decíduos com a utilização de coroas metálicas pré-fabricadas sem necessidade de preparo e remoção de dentina cariada. O selamento da cavidade obtido por meio da boa adaptação da coroa evita a progressão da lesão cariosa e dá condições para a resposta biológica do dente. O objetivo deste estudo foi descrever a Técnica de Hall para restauração de molares decíduos com ampla destruição coronária, bem como avaliar clínica e radiograficamente os elementos tratados a fim de se verificar o desempenho ao longo do tempo da referida técnica. Após um período de avaliação de 2 meses à 3 anos, observou-se sucesso em todos os dentes restaurados pela técnica, sem sinais clínicos ou radiográficos de patologias pulpares. Concluiu-se que a técnica de Hall se mostrou um procedimento restaurador efetivo para dentes decíduos, mantendo a vitalidade e a função dos elementos dentários tratados nos pacientes acompanhados neste estudo. Trata-se de um procedimento atraumático, facilmente aceito pelo paciente infantil, que mostrou ser uma boa opção para uso diário na clínica de Odontopediatria.Objective: to describe the Hall technique for restoration of primary molars with extensive coronal destruction. Case Report: a case with clinical and radiographic follow-up of three years was described. Results: the tooth was successfully restored by the Hall technique, with no clinical or radiographic signs of pulp pathologies. Conclusion: the Hall technique was an effective restorative procedure for primary teeth, preserving the vitality and function of the restored tooth. It is an atraumatic treatment, which is easily accepted by the child, and that has been proven a good option for the everyday use in Pediatric Dentistry

Fluoride release and surface roughness of a new glass ionomer cement: glass carbomer

<div><p>Abstract Objective This study analyzed the fluoride release/recharge and surface roughness of glass carbomer compared to other encapsulated glass ionomer cements (GICs). Material and method The GICs tested were Glass Fill® (GC-GCP Dental), Riva Self Cure® (RS-SDI), Riva Light Cure® (RL-SDI), Equia Fil® (EF-GC Europe). The composite resin Luna® (LU-SDI) was used as control. Five samples of each material were prepared and kept in a humidifier for 24 hours (37 °C, 100% relative humidity). Fluoride release was measured in two times: before (T1: days 1, 2, 7, 14) and after topical application of fluoride (T2: days 15, 16, 21 and 28). The surface roughness was also measured in both times (T1: days 1 and 14; T2: days 15 and 28). All samples were submitted to a single topical application of acidulated fluoride phosphate (Fluor Care - FGM). Two-way ANOVA with repeated measures and Tukey's post-test (p <0.05) were used in the statistical analysis. Result Equia Fil presented the highest fluoride release in both evaluation periods, with a higher release in T1 (p <0.05). The other materials tested, including glass carbomer presented similar release in both periods (T1 and T2). Regarding surface roughness, no significant differences were observed in the interaction between the material × time factors (T1 and T2) (p=0.966). Conclusion The GICs tested presented fluoride release and recharge ability and showed no surface roughness increase by topical application of fluoride.</p></div

Clinical versus laboratory adhesive performance to wet and dry demineralized primary dentin

Purpose: To evaluate the influence of dentin moisture on bond strengths of an etch-and-rinse bonding agent to primary dentin clinically and in the laboratory. Methods: The sample consisted of two groups of 20 caries-free primary second molars: molars in exfoliation period (clinical group) and extracted molars (laboratory group). Class I cavities were prepared in all specimens leaving a flat dentin surface on the pulpal floor. A two-step etch-and-rinse adhesive was vigorously rubbed on either dry (n= 5) or wet demineralized dentin (n= 5) under clinical or laboratory conditions. After restorative procedures, the teeth from the clinical group were extracted after 20 minutes. All samples were processed and underwent microtensile bond strength test and silver nitrate uptake evaluation under scanning electron microscopy. Results: Statistically higher bond strength values were observed when the bonding was performed under laboratory conditions and on a wet demineralized dentin. Most of the failures were adhesive and mixed irrespective of the experimental condition. Silver nitrate uptake occurred in all groups irrespective of the experimental condition. Resin-dentin bond strengths produced in the laboratory in primary teeth may overestimate those produced under clinical circumstances. (Am J Dent 2011;24:221-225)