Craze lines are visible fractures that only involve enamel. The first fracture and the most benign is a craze line.
#Cracked molar crack#
6 Whereas it is important as a clinician to be familiar with all crack forms as an aide in diagnosis, it is often difficult to distinguish clinically among the various types of cracks. The American Association of Endodontists (AAE) has identified five types of cracks in teeth. 3, 4 Cameron coined the term “cracked tooth syndrome” in 1964 and defined it as an incomplete fracture of a vital posterior tooth that may or may not involve the pulp. Incompletely fractured teeth were described by Gibbs in 1954 and by Ritchey and colleagues in 1957.
#Cracked molar cracked#
Historically, there have been a number of terms used to describe cracked teeth as well as a number of different classification schemes. The purpose of this article was to review the literature to establish what evidence exists regarding the risk factors for cracked teeth and their prevention, diagnosis, and treatment.ĬLASSIFICATION/DEFINITIONS OF TOOTH FRACTURE
#Cracked molar how to#
There is a current need for an evidence-based set of guidelines as to how to prevent, diagnose, and treat cracks in teeth. 2 The study then went on to show that, when groups of dentists examined the same patients, there was little consensus about which teeth should be crowned due to risk of fracture. A recent study revealed that 44% of crowns performed by a group of general dentists in North Carolina were done to prevent tooth fracture. Since the outcomes for teeth with an incomplete tooth fracture can be so consequential, resulting in the need for major restoration, RCT, or extraction, the development of a crack poses a significant problem to patients and dentists.
B, Facial aspect of the same tooth demonstrating incomplete tooth fracture extending vertically from the occlusal surface approximately 2/3 the distance to the cementoenamel junction before proceeding in a mesial direction. 1Ī, Occlusal view of tooth #3 with vertical fractures extending from a defective amalgam restoration over the mesial marginal ridge and down the mid-facial surface. A patient survey of over 14,000 molars by the Practice-based Research in Oral Health network from the Oregon Health and Science University revealed the virtually ubiquitous presence of cracks in these teeth. Routine clinical examinations often uncover visible fracture lines in asymptomatic teeth. Unfortunately, by the time the incomplete tooth fracture becomes symptomatic, the tooth may already be destined for RCT or extraction. Cracked tooth syndrome is a term applied to a presumptive diagnosis of incomplete tooth fracture that typically presents with consistent symptoms of pain to biting and temperature stimuli, especially cold.
One form of tooth fracture, cracked tooth syndrome (CTS), often presents a diagnostic conundrum to the dentist and a painful, frustrating event to the patient. The severity and consequences of the fracture can range from minor, needing no treatment at all, to severe, resulting in root canal therapy (RCT), or even tooth loss. Tooth fractures are encountered by dentists daily ( Figure 1).
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