A comparative in vitro analysis of various temporization materials with respect to pulp chamber temperature changes during polymerization

作者：Sneha Bharadwaj, Gopal Krishna Choudhury, Abhilash Mohapatra, Sangram Panda, Upasana Dhar · 发表于：The Journal of Indian Prosthodontic Society · 年份：2024 · DOI：10.4103/jips.jips_492_23 · 被引用次数：2 · 研究领域：Dental materials and restorations、Dental Implant Techniques and Outcomes、Endodontics and Root Canal Treatments

AIM: (1) To compare the temperature rise in the pulp chamber with different resin materials used for making provisional fixed partial dentures in anterior and posterior region while using Polyvinylsiloxane impression materials as matrix. (2) To identify a superior provisionalization material based on the amount of heat dissipated suitable for anterior and posterior provisional fixed partial denture fabrication. SETTINGS AND DESIGN: Temporary crowns and bridges are integral to Fixed Prosthodontics. It has been observed that conventional fixed prosthesis temporisation materials release heat due to the exothermic polymerisation reaction. When such a provisional material is directly let to set on a vital tooth, the heat transfer causes irreversible changes in the pulp tissue depending of the degree of change. Hence, this study observes amount of heat generation in various materials during temporisation procedure, by simulating similar conditions. MATERIALS AND METHODS: Two Models were fabricated, one simulating missing lateral incisor (Model A) and another simulating missing first molar (Model B). Intact maxillary central incisors and canine for Model A and intact mandibular Second Premolar and Second Molar were selected to act as abutments. These abutment teeth were fitted with the tip of a K-type Thermocouple inside their pulp chambers and these were connected to a digital thermometer. Five temporisation materials were chosen for fabrication of temporary crowns through Direct t...