Comparative Evaluation of Bond Strength between Ridge Lap Surface of Acrylic Teeth and Denture Base Resin: An In Vitro StudyFunding None.
Received: 28 December 2018
Accepted after revision: 10 January 2019
28 March 2019 (online)
Statement of Problem Acrylic teeth are preferred to porcelain teeth in dentures as they unite chemically with denture base resin, but their fracture from denture is common.
Purpose The purpose of this study was to improve the bond strength of denture teeth to acrylic resin denture base by chemical or mechanical modification of the ridge lap surface of denture teeth.
Materials and Methods Total 100 artificial cross-linked acrylic resin central incisors were divided into five groups: group A, 20 samples without modification (control group); group B, 20 samples (ridge lap surface of teeth treated with monomer); group C, 20 samples (ridge lap surface of teeth treated with monomer and the glaze layer removed with aluminum oxide abrasive stone); group D, 20 samples (ridge lap surface of teeth treated with dichloromethane); and group E, 20 samples (dichloromethane application followed by abrasion with aluminum oxide stone on ridge lap surface of teeth). They were mounted on wax blocks, and the blocks were acrylized. The bond strength values were obtained by subjecting the samples to shear compressive load under universal testing machine.
Result The results were subjected to statistical analysis by applying analysis of variance and Bonferroni test for multiple group comparisons, and graphs were plotted. The mean value of bond strength was highest for group E (modified by aluminum oxide abrasion prior to dichloromethane application), followed by group C (modified by aluminum oxide abrasion prior to monomer application), group D (modified by dichloromethane application), group B (modified by monomer application), and lastly group A (control group). Significantly improved bond strength values were obtained in modified groups as compared with the control group.
Conclusion Dichloromethane application followed by aluminum oxide abrasion provided the highest bond strength and is recommended to prevent debonding of the teeth from the denture base.
- 1 Jain G, Palekar U, Awinashe V, Mishra SK, Kawadkar A, Rahangdale T. The effect of different chemical surface treatments of denture teeth on shear bond strength: a comparative study. J Clin Diagn Res 2014; 8 (06) ZC15-ZC18
- 2 Rubina KM, Singh M. Evaluation of bond strength between modified ridge lap surface of acrylic teeth and PMMA denture base resin—an in vitro study. Indian J Dent Sci 2015; 2: 41-44
- 3 Chung KH, Chung CY, Chung CY, Chan DCN. Effect of pre-processing surface treatments of acrylic teeth on bonding to the denture base. J Oral Rehabil 2008; 35 (04) 268-275
- 4 Khandagale TS, Sanyal PK, Tewary S. Comparative evaluation of bond strength of surface treated and surface modified anterior acrylic teeth to heat cure denture base: an in vitro study. Int J Oral Care Res 2017; 5 (02) 1-8
- 5 Rodrigues AH. Metal reinforcement for implant-supported mandibular overdentures. J Prosthet Dent 2000; 83 (05) 511-513
- 6 Kelly EB. Has the advent of plastics in dentistry proved of great scientific value?. J Prosthet Dent 1951; 1 (01) (02) 168-176
- 7 Uzun G, Hersek N, Tinçer T. Effect of five woven fiber reinforcements on the impact and transverse strength of a denture base resin. J Prosthet Dent 1999; 81 (05) 616-620
- 8 Alla RK, Sajjan S, Alluri VR. et al. Influence of fiber reinforcement on the properties of denture base resins. J Biomater Nanobiotechnol 2013; 4: 91-97 (Page 91 in history)
- 9 Thean HPY, Chew CL, Goh KI. Shear bond strength of denture teeth to base: a comparative study. Quintessence Int 1996; 27 (06) 425-428
- 10 Büyükyilmaz S, Ruyter IE. The effects of polymerization temperature on the acrylic resin denture base-tooth bond. Int J Prosthodont 1997; 10 (01) 49-54
- 11 Darbar UR, Huggett R, Harrison A. Denture fracture—a survey. Br Dent J 1994; 176 (09) 342-345
- 12 Zuckerman GR. A reliable method for securing anterior denture teeth in denture bases. J Prosthet Dent 2003; 89 (06) 603-607
- 13 Cunningham JL, Benington IC. A new technique for determining the denture tooth bond. J Oral Rehabil 1996; 23 (03) 202-209
- 14 Madhav GV, Raj S, Yadav N, Mudgal I, Mehta N, Tatwadiya R. Shear bond strength of acrylic teeth to acrylic denture base after different surface conditioning methods. J Contemp Dent Pract 2013; 14 (05) 892-897
- 15 Patil SB, Naveen BH, Patil NP. Bonding acrylic teeth to acrylic resin denture bases: a review. Gerodontology 2006; 23 (03) 131-139
- 16 Saavedra G, Valandro LF, Leite FPP. et al. Bond strength of acrylic teeth to denture base resin after various surface conditioning methods before and after thermocycling. Int J Prosthodont 2007; 20 (02) 199-201
- 17 Bragaglia LE, Prates LHM, Calvo MCM. The role of surface treatments on the bond between acrylic denture base and teeth. Braz Dent J 2009; 20 (02) 156-161
- 18 Takahashi Y, Chai J, Takahashi T, Habu T. Bond strength of denture teeth to denture base resins. Int J Prosthodont 2000; 13 (01) 59-65
- 19 Chai J, Takahashi Y, Takahashi T, Habu T. Bonding durability of conventional resinous denture teeth and highly cross-linked denture teeth to a pour-type denture base resin. Int J Prosthodont 2000; 13 (02) 112-116
- 20 Kaura A, Shah R, Lalit J. An in vitro study of bond strength of bond strength between acrylic resin teeth and denture base resin. BUJOD 2014; 4: 38-43