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Observable characteristics coincident with internal cracks in teeth: finding from The National Dental Practice-Based Research Network (October 2018 Article 3)
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JADA October 2018

Background: This study determined if there are observable patient-, tooth- and crack-level characteristics markedly associated with whether a tooth with an external crack also has an internal crack.

Methods: Two hundred nine dentists in The National Dental Practice-Based Research Network enrolled 2,858 adults with a vital permanent posterior tooth having at least 1 observed external crack. Presence and characteristics of internal cracks were recorded for 435 cracked teeth that were treated. Generalized estimating equations were used to identify significant (P < .05) independent odds ratios associated with the tooth having internal cracks.

Key Words: Cracked teeth; cracked tooth; internal crack; practice-based research; symptoms.

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