Comparison of Fracture Sites and Post Lengths in Longitudinal Root Fractures

Abstract

Introduction

Diagnosis of Vertical Root Fractures in Restored Endodontically Treated Teeth: A Time-dependent Retrospective Cohort Study

“…The findings from this study showed that female patients had 2 times higher odds for the clinical presentation of VRFs within 5 years postoperatively. This increased propensity of VRFs in females is in agreement with previous findings (12,19). Conversely, Chan et al (21) reported that males have 1.4 times more VRFs than females in endodontically treated teeth.…”

“…Various studies have evaluated the clinically relevant factors (12,16,19) and radiographic features associated with VRFs (20). Some studies have included both endodontically treated as well as nonendodontically treated teeth in their analysis (12,21).…”

“…Studies that limited their samples to endodontically treated teeth usually included a limited number of cases (ie, 36 teeth [22], 25 [23], and 32 teeth [17]). Others have surveyed a larger number of VRF cases, but the majority of their samples had a post and core restoration (16,19). It has been reported that post space preparation could weaken the remaining tooth structure (9).…”

Etiology of Vertical Root Fractures

“…(c) The VRF load is proportional to dentin fracture toughness K C . Hence, VRF should be more common in older patients, for which K C is known to reduce with age [67,68], consistent with clinical trends [8,69,70]. Bacteria-accommodating dentinal cracks [71] is another important cause for reducing K C (see also Chap.…”

Sealing the Gap of Vertical Root Fracture through the Root Canal

“…The site of fracture was classified into buccal and/or lingual, mesial and/or distal, and other (fracture affecting both buccal/lingual and mesial/distal sites). The fracture regions in longitudinal axial direction were classified into complete fractures or incomplete fractures, and incomplete fractures were further classified into the three subgroups of cervical region fracture, mid-region fracture, and apical region fracture [12].…”