Τίτλος:
Spreader load required for vertical root fracture during lateral compaction ex vivo: evaluation of periodontal simulation and fracture load information
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Objective: To evaluate the biomechanical influence of the periodontium on spreader load measuring required for vertical root fracture (VRF). Study design: Fully developed permanent incisors (n = 32) from 4 fresh goat mandibles were used. All teeth were subjected to standardized root canal instrumentation and divided into 2 groups: Teeth of group A were tested within natural sockets, and teeth of group B were mounted in artificial sockets and then tested. Spreader was driven to standard depth repeatedly, and insertion load was recorded constantly until intentional VRF. Results: Fracture load in group A varied from 5.9 kg to 25.1 kg, and in group B from 4.3 kg to 26.9 kg. No statistical difference was found between the 2 groups in terms of fracture load or plane of fracture (P > .05). Conclusions: Periodontal simulation by acrylic resin and elastomeric impression material was deemed to be reliable. The inability of fracture load to reveal information about crucial events of the phenomenon was evident. © 2008 Mosby, Inc. All rights reserved.
Συγγραφείς:
Soros, C.
Zinelis, S.
Lambrianidis, T.
Palaghias, G.
Περιοδικό:
Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology
Λέξεις-κλειδιά:
acrylic acid resin; biomedical and dental materials; elastomer; root canal filling material, animal; article; audiovisual equipment; biomechanics; chemistry; endodontics; goat; incisor; injury; instrumentation; mechanical stress; methodology; pathophysiology; periodontium; tooth fracture; tooth root; tooth socket, Acrylic Resins; Animals; Biomechanics; Dental Materials; Elastomers; Goats; Incisor; Models, Anatomic; Periodontium; Root Canal Filling Materials; Root Canal Irrigants; Root Canal Obturation; Root Canal Preparation; Stress, Mechanical; Tooth Fractures; Tooth Root; Tooth Socket
DOI:
10.1016/j.tripleo.2008.03.027
