Root Dentin Strain and Temperature Rise During Endodontic Treatment and Post Rehabilitation

Brazilian Dental Journal

Euridsse Sulemane Amade¹  Veridiana Resende Novais¹  Marina Guimaraes Roscoe¹  Fabiane Maria Ferreira Azevedo¹  Aline Aredes Bicalho¹  Carlos Jose Soares¹ 

关键词: cast post and core;    fiberglass post;    deformation;    prefabricated steel post;    root filled teeth;    strain gage test;    temperature;   

DOI  :  10.1590/0103-6440201302268

来源: SciELO

【 摘 要 】

This study investigated the effects of endodontic treatment procedures and different post systems rehabilitation steps on the strain and temperature rise on apical and cervical root dentin regions. Twenty-one extracted human canine teeth had two strain gages attached to the distal root surface and two thermocouples attached to the mesial root surface (cervical and apical). The strain and temperature rise were recorded during the following procedures: root canal preparation, final rinse and drying, root canal filling and canal relief. Then the teeth were divided into three groups (n=7), according to the type of post system: CPC, cast post and core; FGP, fiberglass post; and PSP, prefabricated steel post. Data continued to be recorded during the post space preparation, post modeling (only for CPC), post trying and post cementation. Data were subjected to a two-way ANOVA followed by Tukey's test (α=0.05). The post-space preparation caused the highest temperature rise (4.0-14.9 °C) and the highest strain in the apical region during irrespective of post type. The resin cement light-activation resulted in significant temperature increases in the cervical region for all of the groups. The canal relief and the post-space preparation produced highest temperature rises. The CPC post modeling resulted in higher root strain level similarly the level of post preparation. The PSP resulted in highest strain during post trying and post cementation.

【 授权许可】

CC BY   
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