The Effect of Cooling on the Loosening of the Abutment Screw in Tissue Level Implants with Internal Hex

Document Type : مقاله‌های پژوهشی

Authors

1 PhD, Student Research Committee, Faculty of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

2 Assistant Professor, Dental Implants Research Center, Dental Prosthodontics Department, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

3 PhD, Student Research Committee, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

4 Assistant Professor, Dental Materials Research Center, Department of Prosthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

5 Postgraduate Student, Dental Students’ Research Committee, Department of Prosthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

Abstract

Abstract
Introduction: Abutment screw loosening is one of the most common problems and complications after dental implant treatment, therefore, in order to reduce this complication, providing a logical solution with the least interference with the treatment can be of great importance. For this purpose, this study aims to investigate the effect of cold on loosening abutment screw in implants with internal hex was performed in different tissue-level implant systems.
Materials & Methods: This study examined tissue-level implants in terms of the amount of abutment screw loosening due to cold. The implants were divided into three groups of 10 including DIO (Korean), ITI (Swiss) and Zimmer (American) implants. Abutment screw of 5 samples were torqued with endo cold spray and 5 samples without cold. Then all the abutments were placed in a thermocycler with 5000 Cycles and the amount of detorque of these groups was measured. After collecting the data, using the Covariance test, the results were analyzed at the error level of 0.05.
Results: Detorque rate of implants under the effect of cold was 25.78 ± 2.19 N/cm and the group without cold was 25.40 ± 2.08 N/cm. Also, a significant difference was observed between DIO and ITI implants before cooling and after cooling in terms of the amount of detorque (p value < 0.05), but the amount of detorque before and after applying cold in the Zimmer implant was not significantly different (0.05).
Conclusion: Cold is an effective factor in increasing the detorque force of screw abutments. But the type of implant was also an effective factor in the effect of cold on the detorque required to loosen the abutment screw, and the highest amount of detorque after applying cold was related to ITI implants and the lowest amount of detorque was related to Zimmer implant.

Keywords

References

1. Silva Junior MF, Batista MJ, de Sousa MdLR. Risk factors for tooth loss in adults: A population-based prospective cohort study. PLoS One 2019; 14(7): e0219240.
2. Stajčić Z, Stajčić LS, Kalanović M, Đinić A, Divekar N, Rodić M. Removal of dental implants: review of five different techniques. Int J Oral Maxillofac Surg 2016; 45(5): 641-8.
3. Lee JH, Lee JB, Kim MY, Yoon JH, Choi SH, Kim YT. Mechanical and biological complication rates of the modified lateral-screw-retained implant prosthesis in the posterior region: an alternative to the conventional Implant prosthetic system. J Adv Prosthodont 2016; 8(2): 150-7.
4. Newman M, Takei H, Carranza FA, Klokkevold P. Carranza's clinical periodontology. 9th ed. Philadelphia, PA: W.B. Saunders Co; 2002. p. 1286-2006.
5. Park JK, Choi JU, Jeon YC, Choi KS, Jeong CM. Effects of abutment screw coating on implant preload. J Prosthodont 2010; 19(6): 458-64.
6. Eblaghian G, Reyhani Mohamadi A, Kalantari Nezhad M. Comparative study of two different implants with hexogonal connection on the amount of bacteria accumulated at the implant platform site: An in-vivo study [in Persian]. J Dent Med 2021; 34(1): 33-40.
7. Mencio F, De Angelis F, Papi P, Rosella D, Pompa G, Di Carlo S. A randomized clinical trial about presence of pathogenic microflora and risk of peri-implantitis: comparison of two different types of implant-abutment connections. Eur Rev Med Pharmacol Sci 2017; 21(7): 1443-51.
8. Jo JY, Yang DS, Huh JB, Heo JC, Yun MJ, Jeong CM. Influence of abutment materials on the implant-abutment joint stability in internal conical connection type implant systems. J Adv Prosthodont 2014; 6(6): 491-7.
9. Karpavicius D, Stasikelyte M, Baseviciene N, Sakalauskaite U, Ratkute S, Razukevicius D. The determination of pH of peri-implant crevicular fluid around one-piece and two-piece dental implants: A pilot study. Clin Exp Dent Res 2019; 5(3): 236-42.
10. Misch CM. Dental implant prosthetics. Philadelphia, PA: Elsevier Mosby; 2015.
11. Mencio F, Papi P, Di Carlo S, Pompa G. Salivary bacterial leakage into implant-abutment connections: preliminary results of an in vitro study. Eur Rev Med Pharmacol Sci 2016;2 0(12): 2476-83.
12. Peruzetto WM, Martinez EF, Peruzzo DC, Joly JC, Napimoga MH. Microbiological seal of two types of tapered implant connections. Braz Dent J 2016; 27: 273-7.
13. Srimurugan-Thayanithi N, Abou-Ayash S, Yilmaz B, Schimmel M, Brägger U. Effect of abutment cooling on reverse torque values of abutment screws: An in vitro study. Int J Oral Maxillofac Implants 2023; 38(1): 94-100.
14. Koosha S, Toraji S, Mostafavi AS. Effect of fluid contamination on the reverse torque values of abutment screws at implant-abutment connections. J Prosthet Dent 2020; 123(4): 618-21.
15. Jalali H, Moslemion M, Nokar S. Effect of blood and saliva contamination of the implant-abutment interface on the amount of preload. Dent Adv Res 2018; 3(154): 74-90.
16. Neshandar Asli HN, Vadiati Saberi B, Fatemi AS. In vitro effect of chlorhexidine gel on torque and detorque values of implant abutment screw. Indian J Dent Res 2017; 28(3): 314-9.
17. Kallus T, Bessing C. Loose gold screws frequently occur in full-arch fixed prostheses supported by osseointegrated implants after 5 years. Int J Oral Maxillofac Implants 1994; 9(2): 169-78.
18. Mahgoli H, Hjmiragha H, Nokar S, Jafarian Y. Manual maximum closing torque in three implant abutment systems [in Persian]. JDM 2019; 32(2): 75-82.
19. Tsuge T, Hagiwara Y. Influence of lateral-oblique cyclic loading on abutment screw loosening of internal and external hexagon implants. Dent Mater J 2009; 28(4): 373-81.
20. Tzenakis GK, Nagy WW, Fournelle RA, Dhuru VB. The effect of repeated torque and salivary contamination on the preload of slotted gold implant prosthetic screws. J Prosthet Dent 2002; 88(2): 183-91

Files

Share

How to cite

Statistics