J Adv Prosthodont.  2009 Jul;1(2):102-106. 10.4047/jap.2009.1.2.102.

Abrasion of abutment screw coated with TiN

• Jung SW
• Son MK
• Chung CH
• Kim HJ

• KMID: 2045471
• DOI: http://doi.org/10.4047/jap.2009.1.2.102

Abstract

STATEMENT OF PROBLEM: Screw loosening has been a common complication and still reported frequently. PURPOSE: The purpose of this study was to evaluate abrasion of the implant fixture and TiN coated abutment screw after repeated delivery and removal with universal measuring microscope. MATERIAL AND METHODS: Implant systems used for this study were Osstem and 3i. Seven pairs of implant fixtures, abutments and abutment screws for each system were selected and all the fixtures were perpendicularly mounted in liquid unsaturated polyesther with dental surveyor. After 20 times of repeated closing and opening test, the evaluation for the change of inner surface of implant and TiN-coated abutment screw, and weight loss were measured. Mann-Whitney test with SPSS statistical software for Window was applied to analyze the measurement of weight loss. RESULTS: TiN-coated abutment screws of Osstem and 3i showed lesser loss of weight than non-coated those of Osstem and 3i (P < .05, Mann-Whitney test). CONCLUSION: Conclusively, TiN coating of abutment screw showed better resistance to abrasion than titanium abutment screw. It was concluded that TiN coating of abutment screw would reduce the loss of preload with good abrasion resistance and low coefficient of friction, and help to maintain screw joint stability.

Keyword

screw loosening; TiN-coating; abutment screw

MeSH Terms

Collodion
Friction
Joints
Tin
Titanium
Weight Loss
Collodion
Tin
Titanium

Figure

• 

  Fig. 1 Comparison of Mean Weight Loss of Osstem and 3i samples before and after test(†P < .05, Mann-Whitney test. n = 7).

• 

  Fig. 2 Photomicrograph of internal mating surface of Osstem and 3i implant in SEM (Magnification × 10,000). a. Group A, b. Group B, c. Group C, d. Group D.

Reference

1. Taylor TD. Prosthodontic problems and limitations associated with osseointegration. J Prosthet Dent. 1998. 79:74–78.

2. Jemt T, Pettersson P. A 3-year follow-up study on single implant treatment. J Dent. 1993. 21:203–208.

3. Jemt T. Failures and complications in 391 consecutively inserted fixed prostheses supported by Branemark implants in edentulous jaws: a study of treatment from the time of prosthesis placement to the first annual check up. Int J Oral Maxillofac Implants. 1991. 6:270–276.

4. Goodacre CJ, Bernal G, Rungcharassaeng K, Kan JY. Clinical complications with implants and implant prostheses. J Prosthet Dent. 2003. 90:121–132.

5. Binon PP, Sutter F, Beaty K, Brunski J, Gulbransen H, Weiner R. The role of screws in implant systems. Int J Oral Maxillofac Implants. 1994. 9:supplement. 8–63.

6. Cantwell A, Hobkirk JA. Preload loss in gold prosthesis-retaining screws as a function of time. Int J Oral Maxillofac Implants. 2004. 19:124–132.

7. Haack JE, Sakaguchi RL, Sun T, Coffey JP. Elongation and preload stress in dental implant abutment screws. Int J Oral Maxillofacimplants. 1995. 10:529–536.

8. Martin WC, Woody RD, Miller BM, Miller AW. Implant abutment screw rorations and preloads for four different screw materials and surfaces. J Prosthet Dent. 2001. 86:24–32.

9. Drago CJ. A clinical study of the efficacy of gold-tite square abutment screws in cement-retained implant restorations. Int J Oral Maxillofac Implants. 2003. 18:273–278.

10. Bickford JH. An introduction to the design and behavior of bolted joints. 1995. New York: Marcel Dekker;515–564.

11. Rangert B, Gunne J, Sullivan D. Mechanical aspects of a Brånemark implant connected to a natural tooth: An in vitro study. Int J Oral Maxillofac Implants. 1991. 6:177–186.

12. Weiss EI, Kozak D, Gross MD. Effect of repeated closures and opening torque values in seven abutment-implant systems. J Prosthet Dent. 2000. 84:194–199.

13. Mezger PR, Creugers NH. Titanium nitride coatings in clinical dentistry. J Dent. 1992. 20:342–344.

14. Scarano A, Piattelli M, Vrespa G, Petrone G, Iezzi G, Piattelli A. Bone healing around titanium and titanium nitride-coated dental implants with three surfaces: an experimental study in rats. Clin Implant Dent Relat Res. 2003. 5:103–111.

15. Scarano A, Piattelli M, Vrespa G, Caputi S, Piattelli A. Bacterial adhesion on titanium nitride-coated and uncoated implants: an in vivo human study. J Oral Implantol. 2003. 29:80–85.

16. Sawase T, Yoshida K, Taira Y, Kamada K, Atsuta M, Baba K. Abrasion resistance of titanium nitride coatings formed on titanium by ion-beam-assisted deposition. J Oral Rehabil. 2005. 32:151–157.

17. Abokowitz S, Burke JJ, Hiltz RH. Titanium in industry. 1955. New York(NY): Van Nostrand Co Inc.

18. Elias CN, Figueira DC, Rios PR. Influence of the coating material on the loosing of dental implant abutment screw joints. Mater Sci Eng C Mater Biol Appl. 2006. 26:1361–1366.