Low-level laser therapy affects osseointegration in titanium implants: resonance frequency, removal torque, and histomorphometric analysis in rabbits.
10.5125/jkaoms.2016.42.1.2
- Author:
Jong Ryoul KIM
1
;
Sung Hee KIM
;
In Ryoung KIM
;
Bong Soo PARK
;
Yong Deok KIM
Author Information
1. Department of Oral and Maxillofacial Surgery, On General Hospital, Busan, Korea.
- Publication Type:Original Article
- Keywords:
Lasers;
Bone density;
Animal experiments;
Dental implants;
Titanium
- MeSH:
Animal Experimentation;
Bone Density;
Dental Implants;
Femur;
Humans;
Low-Level Light Therapy*;
Male;
New Zealand;
Osseointegration*;
Rabbits*;
Seoul;
Survival Rate;
Titanium*;
Torque*
- From:Journal of the Korean Association of Oral and Maxillofacial Surgeons
2016;42(1):2-8
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVES: The purpose of this study was to investigate the effects of low-level laser therapy (LLLT) with a diode gallium-aluminum-arsenide (Ga-Al-As) low-level laser device on the healing and attachment of titanium implants in bone. MATERIALS AND METHODS: Thirteen New Zealand white male rabbits weighing 3.0+/-0.5 kg were used for this study. Dental titanium implants (3.75 mm in diameter and 8.5 mm in length, US II RBM plus fixture; Osstem, Seoul, Korea) were implanted into both femurs of each rabbit. The rabbits were randomly divided into a LLLT group and a control group. The LLLT was initiated immediately after surgery and then repeated daily for 7 consecutive days in the LLLT group. Six weeks and 12 weeks after implantation, we evaluated and compared the osseointegration of the LLLT group and control group, using histomorphometric analysis, removal torque testing, and resonance frequency analysis (RFA). The results were statistically significant when the level of probability was 0.05 or less based on a non-parametric Mann-Whitney U-test. RESULTS: The implant survival rate was about 96%. Histologically and histomorphometrically, we observed that the titanium implants were more strongly attached in LLLT group than in control group. However, there was no significant difference between the LLLT group and control group in removal torque or RFA. CONCLUSION: Histologically, LLLT might promote cell-level osseointegration of titanium implants, but there was no statistically significant effects.
