使用不同牙种植体钻头截骨时的热变化：在牛肋骨上的标准化研究
Thermal Variation During Osteotomy With Different Dental Implant Drills: A Standardized Study in Bovine Ribs.
作者信息
Hochscheidt Celso João, Shimizu Roberto Hideo, Andrighetto Augusto Ricardo, Moura Luís Mauro, Golin Alexsander Luiz, Hochscheidt Regina Célia
机构信息
*Master of Sciences in Implant Dentistry, Instituto Latino Americano de Pesquisa e Ensino Odontológico (ILAPEO), Curitiba, PR, Brazil; Technical Manager, Clínica Top Odontologia, Ponta Grossa, PR, Brazil. †Doctor of Sciences in Orthodontics, Universidade Estadual Paulista (UNESP), Araraquara, SP, Brazil; Coordinator, Master's Program in Orthodontics; Professor, ILAPEO, Curitiba, PR, Brazil. ‡Doctor of Sciences in Orthodontics, Universidade de São Paulo (USP), São Paulo, SP, Brazil; Professor, Graduate Programs in Orthodontics and Implant Dentistry, ILAPEO, Curitiba, PR, Brazil. §Docteur en Thermique et Energétique, Institut National des Sciences Appliquées de Lyon; Full Professor, Pontifícia Universidade Católica do Paraná (PUCPR), Curitiba, PR, Brazil. ¶Master of Sciences in Mechanical Engineering-Bioengineering, Pontifícia Universidade Católica do Paraná (PUCPR); Engineering Manager at Neodent Osseointegrated Implants, Curitiba, PR, Brazil. ‖Specialist in Implant Dentistry, Avantis, Balneário Camboriú, SC, Brazil; Partner in Clínica Top Odontologia, Ponta Grossa, PR, Brazil.
出版信息
Implant Dent. 2017 Feb;26(1):73-79. doi: 10.1097/ID.0000000000000535.
INTRODUCTION
This study evaluated thermal variation (heat generation) by dental drills of similar geometries, made from different materials, during performance of 450 standardized osteotomies in bovine ribs to simulate implant site preparations.
MATERIALS AND METHODS
Each of the 3 groups-steel with a diamond-like carbon coating (SG), experimentally surface-treated steel (EG), and aluminum-toughened zirconium ceramic (ZG)-included 3 drills, distributed across 6 subgroups. An implant motor provided torque, rotation, and irrigation for 50% of subgroups.
RESULTS
In preparations drilled to 5 mm under irrigation, the number of osteotomies, material, and diameter did not influence thermal variation (ΔT); when drilling to 13 mm, the greatest ΔT occurred in EG (2.8°C). When drilling to 5 mm without irrigation, drill material influenced mean temperature; when drilling to 13 mm without irrigation, the greatest ΔT (5.5°C) occurred in EG. The highest temperature was observed in SG (79.6°C).
CONCLUSION
After 50 uses, the greatest ΔT occurred in EG and the ∅3.0-mm drill exhibited the highest mean and peak temperatures. Temperatures were influenced by irrigation, number of uses, depth, drill diameter, geometry, and material; however, mean values were within physiological limits.
引言
本研究评估了在牛肋骨上进行450次标准化截骨术以模拟种植体植入部位准备过程中，由不同材料制成的几何形状相似的牙科钻的热变化（产热）情况。
材料与方法
3组——类金刚石碳涂层钢（SG组）、经实验性表面处理的钢（EG组）和铝增韧锆陶瓷（ZG组），每组各有3个钻头，分布在6个亚组中。种植体马达为50%的亚组提供扭矩、旋转和冲洗。
结果
在冲洗条件下钻至5毫米深度的截骨术中，截骨次数、材料和直径对热变化（ΔT）没有影响；钻至13毫米深度时，EG组的ΔT最大（2.8°C）。在无冲洗条件下钻至5毫米深度时，钻头材料影响平均温度；在无冲洗条件下钻至13毫米深度时，EG组的ΔT最大（5.5°C）。SG组观察到的最高温度为79.6°C。
结论
在使用50次后，EG组的ΔT最大，且∅3.0毫米的钻头平均温度和峰值温度最高。温度受冲洗、使用次数、深度、钻头直径、几何形状和材料的影响；然而，平均值在生理极限范围内。
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