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VOLUME 11 , ISSUE 2 ( March-April, 2020 ) > List of Articles


Clinical Assessment of Inlay-retained Bridge Designs (Tub-shaped and Inlay-shaped) in Missing Posterior Teeth Cases: A Randomized Controlled Trial

Mohamed MA Abdelfattah, Omaima S El Dein El Mahallawi, Ahmed N Abdelaziz

Keywords : Fixed partial denture, Marginal fit, Randomized controlled trial, Resin cements, Retention, Secondary caries and zirconia

Citation Information : Abdelfattah MM, El Dein El Mahallawi OS, Abdelaziz AN. Clinical Assessment of Inlay-retained Bridge Designs (Tub-shaped and Inlay-shaped) in Missing Posterior Teeth Cases: A Randomized Controlled Trial. World J Dent 2020; 11 (2):121-127.

DOI: 10.5005/jp-journals-10015-1713

License: CC BY-NC 4.0

Published Online: 18-07-2020

Copyright Statement:  Copyright © 2020; The Author(s).


Aim: This study was aimed to clinically assess the two inlay retained bridges (tub- and inlay-shaped designs) in missing posterior teeth cases. Materials and methods: Thirty cases with missing single posterior tooth were included in the trial and divided into two main groups with a 1:1 allocation ratio (n = 15 for each group). Group I (the control group) received an inlay-retained bridge with inlay design on both abutments. Group II (the intervention group) received an inlay-retained bridge with tub design on both abutments. The inlay-retained bridges were fabricated from monolithic zirconia and bonded using dual-cured self-adhesive resin cement after treating the fitting surfaces mechanically and chemically. The clinical evaluation of the retention, marginal adaptation, and secondary caries occurrence was commenced following the Modified United States Public Health Service (MUSPHS) criteria 12 months after cementation. Results: The results show that the difference was not statistically significant between both groups regarding retention, marginal adaptation, and secondary caries occurrence after 12 months of cementation, with 0.05 statistical significance level and confidence interval of 95%. Conclusion: Within the limitations of this trial, the retention, the marginal adaptation, and the secondary caries for both inlay-retained bridge designs exhibited comparable outcomes. Clinical significance: The use of the inlay-retained bridges with tub design can be superior to the inlay-retained bridges with inlay design regarding the conservation of the tooth structure with the same retention rate, marginal adaptation, and occurrence of secondary caries in missed posterior tooth cases.

  1. Aljehani YA, Baskaradoss JK, Geevarghese A, et al. Current trends in aesthetic. Dentist Health (Irvine Calif) 2014;6(August):1941–1949.
  2. Madfa AA, Al-sanabani FA, Al-qudami NH, et al. Use of zirconia in dentistry: an overview. Biomater J 2014;5:1–9.
  3. Liu Y, Feng H, Bao Y, et al. Fracture and interfacial delamination origins of bilayer ceramic composites for dental restorations. J Eur Ceram Soc 2010;30(6):1297–1305. DOI: 10.1016/j.jeurceramsoc.2009.11.019.
  4. Mehta D, Shetty R. Bonding to zirconia: elucidating the confusion. Int Dent 2010;12(2):1–7.
  5. Ohlmann B, Rammelsberg P, Schmitter M, et al. All-ceramic inlay-retained Fixed partial dentures: preliminary results from a clinical study. J Dent 2008;36(9):692–696. DOI: 10.1016/j.jdent.2008.04.017.
  6. Deniz A, Kale E. A prospective cohort study on cast-metal slot-retained resin-bonded fixed dental prostheses in single missing first molar cases: results after up to 7.5 years. J Adhes Dent 2013;15(1): 73–84.
  7. Abdulkarim A, Samran A, Aswad M, et al. A new design for posterior inlay-retained fixed partial denture. J Prosthodont Res 2013;57(2):146–149. DOI: 10.1016/j.jpor.2012.09.005.
  8. Wolfart S, Bohlsen F, Wegner SM, et al. A preliminary prospective evaluation of all-ceramic crown-retained and inlay-retained fixed partial dentures. Int J Prosthodont 2005;18(6):497–505.
  9. Al-Moaleem MM. Clinical evaluation of porcelain fused to metal inlay-retained bridges. J Dent Med Sci 2014;13(9):129–133. DOI: 10.9790/0853-1396129133.
  10. Takeuchi Y, Koizumi H, Furuchi M, et al. Use of digital impression systems with intraoral scanners for fabricating restorations and fixed dental prostheses. J Oral Sci 2018;60(1):1–7. DOI: 10.2334/josnusd.17-0444.
  11. Jamshidy L, Mozaffari HR, Faraji P, et al. Accuracy of the one-stage and two-stage impression techniques: a comparative analysis. Int J Dent 2016;2016.
  12. Rudolph H, Salmen H, Moldan M, et al. Accuracy of intraoral and extraoral digital data acquisition for dental restorations. J Appl Oral Sci 2016;24(1):85–94. DOI: 10.1590/1678-775720150266.
  13. Kumchai H, Juntavee P, Sun AF, et al. Effect of glazing on flexural strength of full-contour zirconia. Int J Dent 2018;2018 10.1155/2018/8793481.
  14. Kim D-H, Son J-S, Jeong S-H, et al. Efficacy of various cleaning solutions on saliva-contaminated zirconia for improved resin bonding. J Adv Prosthodont 2015;7(2):85. DOI: 10.4047/jap.2015.7.2.85.
  15. Dalla R, Mattiello L, Marcos T, et al. A review of surface treatment methods to improve the adhesive cementation of zirconia-based ceramics. 2013;2013.
  16. Saad DED, Atta O, El-Mowafy O. The postoperative sensitivity of fixed partial dentures cemented with self-adhesive resin cements a clinical study. J Am Dent Assoc 2010;141(12):1459–1466. DOI: 10.14219/jada.archive.2010.0108.
  17. Narula S, Punia V, Khandelwal M, et al. Retention in conventional fixed partial dentures: a review. J Clin Diagnostic Res 2011;5(5):1128–1133.
  18. Chaar MS, Kern M. Five-year clinical outcome of posterior zirconia ceramic inlay-retained FDPs with a modified design. J Dent 2015;43(12):1411–1415. DOI: 10.1016/j.jdent.2015.11.001.
  19. Sailer I, Bonani T, Brodbeck U, et al. Retrospective clinical study of single-retainer cantilever anterior and posterior glass-ceramic resin-bonded Fixed dental prostheses at a mean follow-up of 6 years. Int J Prosthodont 2013;26(5):443–450. DOI: 10.11607/ijp.3368.
  20. Tjan AH, Sarkissian R. Effect of preparation finish on retention and fit of complete crowns. J Prosthet Dent 1986;56(3):283–288. DOI: 10.1016/0022-3913(86)90004-1.
  21. Örtorp A, Jönsson D, Mouhsen A, et al. The fit of cobalt–chromium three-unit Fixed dental prostheses fabricated with four different techniques: a comparative in vitro study. Dent Mater 2011;27(4): 356–363. DOI: 10.1016/
  22. Harder S, Wolfart S, Eschbach S, et al. Eight-year outcome of posterior inlay-retained all-ceramic fixed dental prostheses. J Dent 2010;38(11):875–881. DOI: 10.1016/j.jdent.2010.07.012.
  23. Sundh B, Odman P. A study of fixed prosthodontics performed at a university clinic 18 years after insertion. J Prosthodont 1997;10(6): 513–519.
  24. Arzu Zeynep YB, Unver S. Etiology of secondary caries in prosthodontic treatments. Intech Open 2018;1(8):13.
  25. Nagarsekar A, Gaunkar R, Aras M. Knowledge, attitude, and practice of dental professionals regarding the effect and management of food impaction associated with fixed partial denture prostheses: a survey. J Indian Prosthodont Soc 2016;16(4):372–379. DOI: 10.4103/0972-4052.191286.
  26. Medina-Sotomayor P, Pascual-Moscardó A, Camps I. Accuracy of four digital scanners according to scanning strategy in complete-arch impressions. PLoS ONE 2018;13(9):e0202916. DOI: 10.1371/journal.pone.0202916.
  27. Lally U. Resin-bonded fixed partial dentures past and present--an overview. J Ir Dent Assoc 2013;58(6):294–300.
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