J Korean Acad Prosthodont.  2016 Oct;54(4):341-353. 10.4047/jkap.2016.54.4.341.

Korea Academy of Prosthodontics criteria for longevity studies of dental prostheses

• Yoon JH
• Park YB
• Youn SH
• Oh NS

• KMID: 2388212
• DOI: http://doi.org/10.4047/jkap.2016.54.4.341

Abstract

PURPOSE
The most important factor in longevity studies of dental prostheses is objective and consistent evaluation of the prosthesis. The Korean Academy of Prosthodontics suggested developing a standardized method for longevity studies of dental prostheses. The purpose of this study is to evaluate previously-used criteria and to develop new criteria, in the form of a procedure flowchart and an evaluation sheet. These new criteria may be able to provide a unified standard for future longevity studies of dental prostheses.
MATERIALS AND METHODS
A literature review was performed about the evaluation of dental prostheses. Taking into account the strengths and weaknesses of previously used criteria, a novel, intuitive and objective method was developed for assessment of dental prostheses. Then, a pilot survey was performed with the newly developed flowchart and evaluation sheet to determine problems and implement possible improvements.
RESULTS
Thirty cases of fixed dental prosthesis (FDP), 25 cases of removable dental prosthesis (RDP), and 13 cases of implant supported prosthesis (ISP) were evaluated. The average life expectancy estimate was 12.82 years for FDP, 5.96 years for RDP, and 4.82 years for ISP with Kaplan-Meier survival analysis. Additionally, possible improvements discovered by the pilot survey were reflected in the flowchart and evaluation sheet.
CONCLUSION
The newly developed KAP criteria, flowchart and evaluation sheet enabled objective and consistent results in trial longevity studies of dental prostheses. It is expected that future studies will not only use the KAP criteria but also further improvement will be made on them.

Keyword

Life expectancy of dental prosthesis; Survival rate; Kaplan-Meier analysis; Prostheses and implant; Data collection

MeSH Terms

Data Collection
Dental Prosthesis*
Kaplan-Meier Estimate
Korea*
Life Expectancy
Longevity*
Methods
Prostheses and Implants
Prosthodontics*
Software Design
Survival Rate

Figure

• 

  Fig. 1. (A) Survival curve of fixed dental prostheses, (B) Survival curve of removable dental prostheses, (C) Survival curve of implant supported prostheses. ∗CSR: Cumulative Survival Rate.

• 

  Fig. 2. (A) Flow-chart for evaluating fixed dental prostheses with KAP criteria: marginal integrity, (B) Flow-chart for evaluating fixed dental prostheses with KAP criteria: anatomic form, (C) Flow-chart for evaluating fixed dental prostheses with KAP criteria: esthetic evaluation, (D) Flow-chart for evaluating removable partial dentures with KAP criteria, (E) Flow-chart for evaluating complete dentures with KAP criteria, (F) Flow-chart for evaluating implant supported prostheses with KAP criteria.

• 

  Fig. 3. (A) Evaluation sheet for fixed dental prostheses, (B) Evaluation sheet for removable dental prostheses, (C) Evaluation sheet for implant supported prostheses.

• 

  Fig. 4. An example of flow-chart in color match tab of USPHS criteria.

Reference

1.Kwon BK., Ahn HJ., Kang JK., Kim JY., Choi JH. The jurisdictional precedent analysis of medical dispute in dental field. J Oral Med Pain. 2006. 31:283–96.

2.Cha YR., Kwon JS., Choi JH., Kim JY. The analysis of the current status of medical accidents and disputes researched in the Korean web sites. J Oral Med Pain. 2006. 31:297–316.

3.Schwartz NL., Whitsett LD., Berry TG., Stewart JL. Unserviceable crowns and fixed partial dentures: life-span and causes for loss of serviceability. J Am Dent Assoc. 1970. 81:1395–401.

4.Walton JN., Gardner FM., Agar JR. A survey of crown and fixed partial denture failures: length of service and reasons for replacement. J Prosthet Dent. 1986. 56:416–21.

5.Glantz PO., Nilner K., Jendresen MD., Sundberg H. Quality of fixed prosthodontics after 15 years. Acta Odontol Scand. 1993. 51:247–52.

6.Glantz PO., Nilner K., Jendresen MD., Sundberg H. Quality of fixed prosthodontics after twenty-two years. Acta Odontol Scand. 2002. 60:213–8.

7.Holm C., Tidehag P., Tillberg A., Molin M. Longevity and quality of FPDs: a retrospective study of restorations 30, 20, and 10 years after insertion. Int J Prosthodont. 2003. 16:283–9.

8.Hämmerle CH., Ungerer MC., Fantoni PC., Brägger U., Bürgin W., Lang NP. Long-term analysis of biologic and technical aspects of fixed partial dentures with cantilevers. Int J Prosthodont. 2000. 13:409–15.

9.Lindquist E., Karlsson S. Success rate and failures for fixed partial dentures after 20 years of service: Part I. Int J Prosthodont. 1998. 11:133–8.

10.Sundh B., Odman P. A study of fixed prosthodontics performed at a university clinic 18 years after insertion. Int J Prosthodont. 1997. 10:513–9.

11.Libby G., Arcuri MR., LaVelle WE., Hebl L. Longevity of fixed partial dentures. J Prosthet Dent. 1997. 78:127–31.

12.Leempoel PJ., Käyser AF., Van Rossum GM., De Haan AF. The survival rate of bridges. A study of 1674 bridges in 40 Dutch general practices. J Oral Rehabil. 1995. 22:327–30.

13.Palmqvist S., Swartz B. Artificial crowns and fixed partial dentures 18 to 23 years after placement. Int J Prosthodont. 1993. 6:279–85.

14.Valderhaug J. A 15-year clinical evaluation of fixed prosthodontics. Acta Odontol Scand. 1991. 49:35–40.

15.Karlsson S. A clinical evaluation of fixed bridges, 10 years following insertion. J Oral Rehabil. 1986. 13:423–32.

16.Pjetursson BE., Tan K., Lang NP., Brägger U., Egger M., Zwahlen M. A systematic review of the survival and complication rates of fixed partial dentures (FPDs) after an observation period of at least 5 years. Clin Oral Implants Res. 2004. 15:667–76.

17.Scurria MS., Bader JD., Shugars DA. Meta-analysis of fixed partial denture survival: prostheses and abutments. J Prosthet Dent. 1998. 79:459–64.

18.Creugers NH., Käyser AF., van't Hof MA. A meta-analysis of durability data on conventional fixed bridges. Community Dent Oral Epidemiol. 1994. 22:448–52.

19.Shin WJ., Jeon YS., Lee KW., Lee HY., Han DH. Longevity and failure analysis of fixed restorations serviced in Korea. J Korean Acad Prosthodont. 2005. 43:158–75.

20.Yun MJ., Jeon YC., Jeong CM. Evaluation of clinical status of fixed prosthesis. J Korean Acad Prosthodont. 2009. 47:99–107.

21.Cvar J., Ryge G. Criteria for the clinical evaluation of dental restorative materials. In: Documents UD ed. Printing Office, San Francisco USPHS 790244,. 1971. 1–42.

22.California Dental Association. Guidelines for the assessment of clinical quality and professional performance. 3rd ed.Sacramento, CA: California Dental Association;1995.

23.Vermeulen AH., Keltjens HM., van't Hof MA., Kayser AF. Ten-year evaluation of removable partial dentures: survival rates based on retreatment, not wearing and replacement. J Prosthet Dent. 1996. 76:267–72.