A Comparative Evaluation of Shear Bond Strength of Seventh- and Eighth-Generation Self-etch Dentin Bonding Agents in Primary Teeth: An In Vitro Study

Abstract

Aim: To compare the shear bond strength of seventh- and eight-generation self-etch dentin bonding agents in primary teeth using universal testing machine.

Materials and methods: Forty extracted sound human primary molars were collected and randomly divided into two groups of 20 sample each. Shear bond strength of seventh-generation bonding agent [ADPER Single Bond Universal, (group II)] and eighth-generation bonding agent [Futurabond DC, VOCO Germany, (group I)] were calculated by using Universal Testing Machine (PTC/O83/ME, INSTRON, USA) and expressed in megapascals (MPa). Recorded data were compiled and subjected to statistical analysis using Student's t test.

Results: The mean shear bond strength of group I (eighth-generation dentin bonding agent) and group II (seventh-generation dentin bonding agent) ranged from 22.10 to 37.10 MPa and 19.80 to 30.30 MPa, respectively Student's t test showed significantly different and higher (8.7%) shear bond strength in group I when compared to group II (p value = 0.017).

Conclusion: Shear bond strength of eighth-generation dentin bonding agent (Futurabond DC) was better than seventh-generation dentin bonding agent (Adper Single Bond Universal).

Clinical significance: An effective bond to tooth would reduce marginal microleakage, bacterial penetration, postoperative sensitivity, possibility of pulpal inflammation, and preserve tooth structure by allowing minimal cavity preparation.

How to cite this article: Mishra A, Koul M, Upadhyay VK, et al. A Comparative Evaluation of Shear Bond Strength of Seventh- and Eighth-generation Self-etch Dentin Bonding Agents in Primary Teeth: An In Vitro Study. Int J Clin Pediatr Dent 2020;13(3):225-229.

Keywords: Dentine bonding agents; Seventh- and eight-generation bonding agents; Shear bond strength; Universal testing machine.

Fig. 1

Crown portion embedded in a mold containing cured acrylic resin

Fig. 2

Exposure of dentinal surface

Figs 3A and B

(A) Application of bonding agent; (B) Light-curing of bonding agent

Figs 4A and B

Samples after restoration

Fig. 5

Testing of sample with universal testing machine

Fig. 6

Comparison of mean shear bond strength between the two groups. *p value <0.05 when compared to group. Group I: Eighth-generation bonding agent (Futurabond DC). Group II: Seventh-generation bonding agent (Adper Single Bond Universal)