Heat Generation During Guided and Freehand Implant Site Preparation at Drilling Speeds of 1500 and 2000 RPM at Different Irrigation Temperatures: An In Vitro Study.

Barrak, Ibrahim; Boa, Kristóf; Joób-Fancsaly, Árpád; Varga, Endre; Sculean, Anton; Piffkó, József (2019). Heat Generation During Guided and Freehand Implant Site Preparation at Drilling Speeds of 1500 and 2000 RPM at Different Irrigation Temperatures: An In Vitro Study. Oral health & preventive dentistry, 17(4), pp. 309-316. Quintessenz Verlags-GmbH 10.3290/j.ohpd.a42507

[img] Text
ohpd_2019_04_s0309.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (307kB) | Request a copy

PURPOSE The purpose of our study was to evaluate the impact of different irrigation fluid temperatures on intraosseous temperature increment during guided and freehand implant site preparation. MATERIALS AND METHODS Bovine rib segments were used. Temperature was detected using K-type thermocouples. The studied groups were defined as combinations of the following: drilling speed (1500, 2000 RPM), drill diameter (2.0, 2.5, 3.0, 3.5 mm), surgical method (guided, freehand), and irrigation fluid temperature (10°C, 15°C, 20°C). The data were analysed with Kruskal-Wallis analysis of variance (ANOVA) and ANOVA, as appropriate. RESULTS At 1500 RPM, guided drilling with 20°C irrigation fluid yielded temperature values exceeding the necrotic threshold (47°C) when performed with bits of 3.0 and 3.5 mm diameters. Meanwhile, 15°C irrigation managed to keep the mean increment below 8.0°C at the diameter of 3.5 mm for both guided and freehand surgery. However, 10°C irrigation cancelled every statistically significant difference between guided and freehand groups. At 2000 RPM and with 20°C irrigation, mean peak temperatures exceeded the necrotic threshold at the diameters 3.0 and 3.5 mm (guided) and 3.5 mm (freehand). When applying 10°C irrigation, though, all measurements indicated peak temperatures in the safe zone. CONCLUSION Drillings at 1500 and 2000 RPM, in a guided setting, cause temperature elevations that exceed the necrotic threshold. A speed of 2000 RPM drilling may produce potentially harmful temperatures also in a freehand setting. 10°C and 15°C irrigation kept temperature increments in the safe zone at 2000 RPM and 1500 RPM, respectively.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Periodontology

UniBE Contributor:

Sculean, Anton

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1602-1622

Publisher:

Quintessenz Verlags-GmbH

Language:

English

Submitter:

Doris Burri

Date Deposited:

20 Jan 2020 10:58

Last Modified:

23 Jan 2020 05:17

Publisher DOI:

10.3290/j.ohpd.a42507

PubMed ID:

31093616

Uncontrolled Keywords:

dental implants heat production osteonecrosis osteotomy

BORIS DOI:

10.7892/boris.137769

URI:

https://boris.unibe.ch/id/eprint/137769

Actions (login required)

Edit item Edit item
Provide Feedback