FINITE ELEMENT ANALYSIS OF 3D TRANSIENT LINEAR TEMPERATURE CHANGES IN THE PERIODONTAL LIGAMENT DURING THERMOPLASTICIZED GUTTAPERCHA OBTURATION TECHNIQUES.

ESİM, Emir; ER, Özgür; ASLAN, Tuğrul; EMİNSOY AVCI, Ayşe Tuğba; ÜSTÜN, Yakup

Objective: This study used finite element analysis to evaluate temperature changes in the periodontal ligament due to various thermoplasticized gutta-percha obturation techniques. Materials and Methods: Mandibular premolar models were created in SolidWorks software, simulating carrier-based obturation (CBO) and continuous wave of condensation with backfill obturation (CWC BFO). Results: Upon analyzing seven models, the study revealed that the CWC BFO models with the highest temperature settings (Models 4 and 7) recorded the highest maximum temperatures, nearing 127°C. In contrast, the CBO model (Model 1) exhibited the lowest maximum temperature at 47.835°C. These temperatures were primarily measured at the apical region. The duration exceeding 10°C above body temperature was highest in Models 4 and 7. CBO caused a brief 10.835°C rise for 0.43 s, deemed safe, while all CWC BFO techniques exceeded 10°C above body temperature, lasting up to 14.40 s. Lower temperature settings, particularly during CWC, are recommended for safer CWC BFO application. Conclusion: The CBO technique caused minimal temperature increase and appears safe. However, the CWC technique with BFO resulted in significantly higher temperatures, potentially harming the periodontal ligament. The authors recommend using lower temperatures with both techniques, especially with the CWC technique, and applying the BFO technique in multiple layers to minimize risks.

FINITE element method; CONDENSATION; PERIODONTAL ligament; BICUSPIDS; TEMPERATURE

Meandros Medical & Dental Journal, 2024, Vol 25, Issue 4, p379

2149-9063

Academic Journal

10.69601/meandrosmdj.1541566