Clinical and radiographic evaluation of fendermate and T-band matrix systems for restoration of class II cavities in primary molars: a randomized clinical trial

Abstract

Background: Restoring posterior primary teeth may result in issues such as improper contact points and proximal overhangs. New matrix systems were implemented to restore proper tooth contours and contacts. Aim of the study: This study aimed to assess and compare the radiographic and clinical effectiveness, patient comfort, and operator satisfaction in Class II cavity restoration in primary molars utilizing the FenderMate matrix system versus the T-band. Methods: This randomized clinical trial involving (20 children, 40 molars), ranging between 5 and 9 years, with bilateral class II cavities in primary molars (n = 40), indicated for class II restoration. Primary molars were randomized into two groups based on the matrix system used; Group I underwent the FenderMate system, whereas Group II underwent the T-band system. We assessed the clinical and radiographical efficacy of restorations, patient comfort, operator ease and satisfaction by the end of the procedure. Data were collected, and subjected to stastical analysis utilizing the chi-square test, The Mann-Whitney U test and, the Fisher exact test with statistical significance determined at p < 0.05. Results: The Optimum proximal contact was significantly achieved in 80% of T-band cases versus 30% with FenderMate (p = 0.006). No substantial differences were detetected between groups regarding radiographic proximal overhangs (p = 0.26) and ease of application/removal during primary molars’ class II cavity restoration (p = 0.11 and p = 0.12, respectively). However, the FenderMate group experienced significant gingival trauma (p < 0.001) and restoration dislodgment (p < 0.001) but required significantly less time for application (p < 0.001). The T-band group exhibited significant patient comfort (P = 0.02, 0.0001), while FenderMate caused significant patient discomfort (P = 0.0002). Conclusion: T- band matrices yield better proximal contacts and patient confort, while FenderMate provides greater time efficiency. These findings might assist clinicians in matrix selection for pediatric Class II restorations. Trial registration: This current controlled trial was registered at clinicalTrials.gov (ID NCT06447324) on June 10, 2024.