Pulp liner materials in selective caries removal: study protocol for a randomised controlled trial

Author(s)

Stafuzza, Tassia Carina ^[1] ; Vitor, Luciana Lourenco Ribeiro ^[1] ; Lourenco Neto, Natalino ^[1] ; Rios, Daniela ^[1] ; Cruvinel, Thiago ^[1] ; Sakai, Vivien Thiemy ^[2] ; Moretti, Ana Beatriz Silveira ^[2] ; Machado, Maria Aparecida Andrade Moreira ^[1] ; Oliveira, Thais Marchini ^{[1, 3]}

Affiliation

^[1] Univ Sao Paulo, Sch Dent Bauru, Dept Pediat Dent Orthodont & Publ Hlth, Orthodont & Publ Hlth, Sao Paulo - Brazil

^[2] Univ Fed Alfenas, Sch Dent, Dept Clin & Surg, Alfenas - Brazil

^[3] Univ Sao Paulo, Hosp Rehabil Craniofacial Anomalies, Dept Pediat Dent, Sao Paulo - Brazil

• Document type: Journal article
• Source: BMJ OPEN; v. 11, n. 1 2021.
• Web of Science Citations: 0

Abstract

Introduction The literature shows that selective carious tissue removal (SCTR) decreases the number and diversity of bacteria, stops the caries process and reduces the risk of pulp exposure. However, no consensus exists on which pulp liner would be suitable for teeth undergoing SCTR. So, this study will verify the in vivo response of dentine-pulp complex after SCTR in primary teeth with or without pulp liner material. Methods and analysis A randomised clinical trial, double-blinded, parallel-group and allocation concealment will be conducted with the enrolment of 384 patients from 5 to 9 years, with one maxillary/mandibular first/second primary molars with deep occlusal/occlusoproximal cavities. The remaining dentine will be lined with calcium hydroxide cement-group 1; mineral trioxide aggregate-group 2 and without liner-group 3. The primary outcome will be success of the of dentine-pulp complex evaluated clinically and radiographically at 6, 12 and 24 months, while the secondary outcomes will be the measurement of the dentine barrier on periapical radiographs. During all study, two trained and calibrated examiners will evaluate the treated teeth clinically and radiographically. Interexaminer and intraexaminer reliability will be verified by casual and systematic error. The Kolmogorov-Smirnov test will be adopted to test the normality of continuous variables. Comparisons among groups will be performed by using the chi(2) test and anaylsis of variance, followed by Tukey test (p<0.05). The logistic regression will be applied, and the degrees of this association will be measured using the OR and 95% CI. Ethics and dissemination The present protocol was submitted and approved by the Ethical Committee of the University of Sao Paulo, Bauru, Sao Paulo, Brazil (CAAE: 79123517.0.0000.5417). Consent for publication will be obtained from all parents or legal guardians. Results of this study will be reported in full through peer-reviewed journals. (AU)

• FAPESP's process: 15/13343-9 - Randomized clinical trial of three materials after partial caries removal in primary teeth
• Grantee: Tássia Carina Stafuzza
• Support Opportunities: Scholarships in Brazil - Master