Drilling- and Withdrawing-Related Thermal Changes during Implant Site Osteotomies

Background Intrabony temperature increase is not only dependent on shearing energy and mechanical friction between bone and surgical drill but is also related to heat capacity and thermal conductivity of the surrounding bone and the applied surgical instrument. Thus time of occurrence of the highest...

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Bibliographic Details
Published in:Clinical implant dentistry and related research 2015-02, Vol.17 (1), p.32-43
Main Authors: Strbac, Georg D., Giannis, Katharina, Unger, Ewald, Mittlböck, Martina, Vasak, Christoph, Watzek, Georg, Zechner, Werner
Format: Article
Language:English
Subjects:
Animals
Bone Density
Cattle
Dentistry
Equipment Design
Friction
heat generation
implant drill
implant osteotomy
In Vitro Techniques
irrigation
multiple temperature sensors
Osteotomy - instrumentation
shearing process
Temperature
Therapeutic Irrigation
Thermal Conductivity
withdrawing process
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Summary:Background Intrabony temperature increase is not only dependent on shearing energy and mechanical friction between bone and surgical drill but is also related to heat capacity and thermal conductivity of the surrounding bone and the applied surgical instrument. Thus time of occurrence of the highest temperature rise can be expected after the shearing process of the osteotomy, potentially affecting the process of osseointegration. Purpose The aim of this study was to evaluate temperature changes during the shearing and withdrawing processes during osteotomies. Materials and Methods An overall 160 automated intermittent osteotomies (10/16 mm drilling depth) with 2 mm diameter twist drills and 3.5 mm diameter conical drills and different irrigation methods (without/external/internal/combined) were performed on standardized bone specimens. The drilling cycles were operated by a computer‐controlled surgical system, while a linear motion potentiometer and multichannel temperature sensors in various intrabony levels ensured the real‐time documentation of temperature changes during the shearing and withdrawing processes. Results The highest temperature changes were invariably recorded during the process of withdrawal. Significantly lower temperature changes (p 
ISSN:1523-0899
1708-8208
DOI:10.1111/cid.12091