Comparison of Er:YAG laser, piezoelectric, and drill osteotomy for dental implant site preparation: a biomechanical and histological analysis in sheep.

Abstract:

BACKGROUND AND OBJECTIVES:The aim of this study was to examine the influence of implant bed preparation, using either Er:YAG laser ablation, piezoelectric surgery or drill osteotomy, on osseointegration of titanium dental implants after 4, 6, and 8 weeks. MATERIAL AND METHODS:A total of 108 implants (Camlog) were placed in the pelvis of 6 sheep (18 implants/sheep). Implant sites were prepared by an Er:YAG laser, a dental drill or a piezoelectric device. For each time period, six implants were used for biomechanical removal torque testing and six implants for a semi-quantitative histological assessment of the bone-to-implant contact (BIC). RESULTS:An initially missing implant adjusted site preparation led to slightly higher BIC and torque values in the piezoelectric and laser groups due to a press-fit effect after 4 weeks. Statistical analysis of the average mean BIC after 4, 6, and 8 weeks revealed no significant differences (P > 0.05) between the different osteotomy techniques. Comparison of individual removal torque values showed the highest value for laser osteotomy after 8 weeks (1,698.50 +/- 67.52 Nmm), which was significantly higher than the corresponding value for drill osteotomy (P = 0.006). CONCLUSION:Although BIC and removal torque values decreased in the laser and piezoelectric groups at 6 weeks during an active remodeling process, favorable and superior BIC as well as torque values could be demonstrated at 8 weeks. Thus laser and piezoelectric osteotomy seem to be at least comparable to drill osteotomy, concerning early osseointegration and implant stability.

journal_name

Lasers Surg Med

authors

Stübinger S,Biermeier K,Bächi B,Ferguson SJ,Sader R,von Rechenberg B

doi

10.1002/lsm.20944

subject

Has Abstract

pub_date

2010-09-01 00:00:00

pages

652-61

issue

7

eissn

0196-8092

issn

1096-9101

journal_volume

42

pub_type

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