Evaluation of Immediate and Delayed Microleakage of Class V Cavities Restored with Chitosan-incorporated Composite Resins: An In Vitro Study

Abstract

Aim and objective To evaluate and compare the microleakage of unmodified microhybrid composite and 0.2% chitosan-incorporated composite in class V cavities restored immediately and after 3 months of storage in artificial saliva. Materials and methods Sixty human permanent maxillary premolars were collected and standardized class V cavity prepared on the buccal surface of each tooth with dimensions: mesiodistally 3 mm, occluso cervically 2 mm, and depth of 1.5 mm and restored with microhybrid composite and chitosan-incorporated composite resins respectively and randomly divided: Group I: control-microhybrid composite ( n = 30): (a) 15 teeth tested immediately (b) 15 teeth tested after 3 months. Group II–restored with chitosan + composite ( n = 30): (a) 15 teeth tested immediately (b) 15 teeth tested after 3 months. Specimens were stored in artificial saliva following which a dye extraction test was carried out using a spectrophotometer. Results There was no statistically significant difference in microleakage score between the chitosan-composite group and unmodified composite group when evaluated immediately after placing the restoration. Microleakage values of the unmodified composite group increased significantly after 3 months of storage in artificial saliva and values of the chitosan-composite group did not differ significantly even after 3 months of storage. Microleakage was seen significantly less in the chitosan-composite group compared to the unmodified composite group after 3 months of storage in artificial saliva. Conclusion It can be concluded that chitosan-incorporated composite seems to have improved mechanical properties and forms a more stable bond when compared with unmodified microhybrid composite in addition to being antibacterial. Clinical significance Considering the advantageous properties of this material, it may be clinically useful in restoring class V cavities in patients with high caries risk. However, further in vitro and in vivo studies need to be carried out. How to cite this article Deb A, Pai V, Nadig RR. Evaluation of Immediate and Delayed Microleakage of Class V Cavities Restored with Chitosan-incorporated Composite Resins: An In Vitro Study. Int J Clin Pediatr Dent 2021;14(5):621–627.

Evaluation of surface microhardness and gingival marginal adaptation of three different bulk‐fill flowable resin composites: A comparative study

“…Teeth were thoroughly cleansed with an ultrasonic scaler (woodpecker DTE D5 scaler unit, china) 41 and polished with nonfluoridated pumice to eliminate any debris. Teeth were disinfected for 24 h in 0.5% chloramine‐T and kept in 0.1% thymol solution and refrigerated at 4°C until use 42 . Teeth were used within 3 months from extraction.…”

“…To regulate the depth, a stopper for endodontic files was attached to the bur head 45 . Determination of the diameter and depth were performed using a graduated periodontal probe to provide confirmation 42 . Restorative operations began after the cavity borders were removed using a cotton pellet saturated in acetone.…”

“…Teeth were disinfected for 24 h in 0.5% chloramine-T and kept in 0.1% thymol solution and refrigerated at 4 C until use. 42 Teeth were used within 3 months from extraction.…”

“…Group A: The gingival marginal adaptation was evaluated above CEJ by 1 mm (n = 90). 42 Group B: The gingival marginal adaptation was evaluated below CEJ by 1 mm (n = 90). 44 To regulate the depth, a stopper for endodontic files was attached to the bur head.…”

An in Vitro Comparative Evaluation for Internal and Marginal Integrity and the Degree of Monomer Conversion of Alkasite Restorative Material

“…835diamond bur (ecoline, Germany) was used underneath water coolant. 15 The cavity was positioned one millimeter (mm) above the tooth's cemento-enamel junction. Round bur was used for finishing the cavity form with a low speed hand piece.…”