Professor, Department of Prosthodontics, Near East University Faculty of Dentistry, Mersin, Turkey.
Associate Professor, Department of Prosthodontics, Dentarma Dental Clinic, Eskişehir, Turkey.
J Prosthet Dent. 2022 Oct;128(4):746-753. doi: 10.1016/j.prosdent.2020.12.036. Epub 2021 Apr 5.
How material loss from sleeves and drills is affected when different guide sleeve materials and different sizes of implant drills are used for different regions of surgical guides is unclear.
The purpose of this in vitro study was to compare the amount of material loss from different guide sleeves (zirconia and cobalt-chromium) and drills of different diameters during osteotomy preparation in different regions.
Three tooth-supported surgical guides with sleeve holes positioned in the first premolar and second molar sites were prepared. Guide sleeves (Ø 2.20 mm, 3.40 mm, and 4.05 mm) were milled from zirconia (n=60) and cobalt-chromium (n=60) blocks. A total of 12 titanium nitride-coated stainless steel twisted drills (n=6 per sleeve material) of different diameters (Ø 2.00, 3.20, 3.85 mm) were used with corresponding sleeves during the drilling. The weight loss from the drills and the volume loss from the guide sleeves after drilling were analyzed by using multiple linear mixed effect models (α=.05).
According to the 4-way ANOVA for volume loss from sleeves, no significant interaction was found among the 4 main effects (number of times a drill was used, region, diameter, and material), but interactions between the number of times a drill was used and diameter (P=.001) and between the number of times the drill was used and material were significant (P<.001). For weight loss from the drills, a significant interaction was detected between the number of times the drill was used and diameter (P=.024).
Less sleeve material was lost when zirconia sleeves were used. All sleeves had more material loss in the molar region than in the premolar region. The diameter had varying effects on the amount of material loss from drills and sleeves. The sleeve material and the region did not affect the material loss from drills.
当不同的导套材料和不同尺寸的种植体钻头用于手术导板的不同区域时，钻头和导套的材料损耗会受到怎样的影响尚不清楚。
本体外研究的目的是比较不同区域骨切开预备过程中不同直径的导套（氧化锆和钴铬）和钻头的材料损耗量。
制备 3 个带有套管孔的牙支持式手术导板，套管孔位于第一前磨牙和第二磨牙部位。从氧化锆（n=60）和钴铬（n=60）块体中铣削出直径为 2.20mm、3.40mm 和 4.05mm 的导套。使用与相应套管配套的共 12 个钛氮化物涂层不锈钢丝锥（每个套管材料 6 个），直径分别为 2.00mm、3.20mm 和 3.85mm。使用多线性混合效应模型（α=.05）分析钻头的重量损失和钻孔后导套的体积损失。
根据套管体积损失的 4 因素方差分析，钻头使用次数、区域、直径和材料这 4 个主要因素之间没有发现显著的相互作用，但钻头使用次数和直径（P=.001）以及钻头使用次数和材料之间的相互作用是显著的（P<.001）。对于钻头的重量损失，钻头使用次数和直径之间的相互作用有显著差异（P=.024）。
使用氧化锆套管时，套管材料的损耗较少。所有套管在磨牙区的材料损耗均大于前磨牙区。直径对钻头和套管的材料损耗量有不同的影响。套管材料和区域不影响钻头的材料损耗。
