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Temperature variation on root surface with three root-end cavity preparation techniques
Emre Bodrumlu1, Ilker Keskiner2, Mahmut Sumer3
1Endodontics Department, Faculty of Dentistry, Ondokuz Mayis University, Samsun,Turkey. bodrumlu@omu.edu.tr
Srpski Arhiv Za Celokupno Lekarstvo
|December 25, 2013
Summary
Root-end cavity preparation can cause damaging thermal changes. Ultrasonic tips and burs resulted in temperature increases within safe limits, making them a potentially safer option for preserving periodontal tissues.
Area of Science:
- Endodontics and Dental Materials Science
Background:
- Root-end cavity preparation can induce thermal changes on external root surfaces.
- These thermal changes pose a risk of damage to periodontal ligament cells and surrounding alveolar bone.
Purpose of the Study:
- To evaluate temperature variations during root-end cavity preparation.
- To compare temperature changes using tungsten carbide burs, diamond burs, and ultrasonic diamond tips at 1 mm and 3 mm from the root apex.
Main Methods:
- Root-end resection was performed 3 mm from the apex.
- Specimens were divided into three groups for preparation with tungsten carbide bur, diamond bur, or ultrasonic diamond tip.
- Thermocouples measured temperature changes at 1 mm (T1) and 3 mm (T2) to the cutting plane.
Main Results:
- Temperature increases ranged from 3.53°C to 4.34°C at T1 and 2.62°C to 4.39°C at T2.
- Ultrasonic tips showed mean temperature increases of 3.68°C (T1) and 3.04°C (T2).
- Ultrasonic preparation was fastest (10.25 sec), while diamond bur was slowest (28.17 sec).
Conclusions:
- Temperature rises associated with ultrasonic retro tips and burs were between 2.62°C and 4.39°C.
- These observed temperature increases were determined to be within safe limits for periodontal tissues.
