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Thermal analysis of the intact mandibular premolar: a finite element analysis
Author(s) -
Oskui I. Z.,
Ashtiani M. N.,
Hashemi A.,
Jafarzadeh H.
Publication year - 2013
Publication title -
international endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.988
H-Index - 119
eISSN - 1365-2591
pISSN - 0143-2885
DOI - 10.1111/iej.12069
Subject(s) - premolar , finite element method , materials science , maximum temperature , pulp (tooth) , composite material , dentistry , orthodontics , structural engineering , thermodynamics , engineering , physics , medicine , molar
Aim To obtain temperature distribution data through human teeth focusing on the pulp‐dentine junction ( PDJ ). Methodology A three‐dimensional tooth model was reconstructed using computer‐aided design software from computed tomographic images. Subsequently, temperature distribution was numerically determined through the tooth for three different heat loads. Loading type I was equivalent to a 60° C mouth temperature for 1 s. Loading type II started with a 60° C mouth temperature, decreasing linearly to 37° C over 10 s. Loading type III repeated the pattern of type II in three consecutive cycles, with a 5 s resting time between cycles. Results The maximum temperatures of the pulp were 37.9° C, 39.0° C and 41.2° C for loading types I, II , and III , respectively. The largest temperature rise occurred with the cyclic loading, that is, type III . Conclusion For the heat loads considered, the predicted peak temperatures at the PDJ were less than the reported temperature thresholds of irreversible pulpal damage.