hidden split in a tooth

Patient: 61year-old female with a history of colitis and hypothyroidism

Chief Complaint: biting and cold sensitivity

Dental History: The patient reported no recent dental procedures and started experiencing discomfort 5 days prior to the endodontic examination

Significant Findings: Severe localized percussion sensitivity was associated with the mandibular left central incisor (tooth #24). Sharp transient sensitivity was also noted with tooth #24 with the adjacent teeth responding within normal limits. Periodontal findings as well as all other clinical tests and findings were within normal limits. Fiberoptic transillumination of the tooth demonstrated a break of the beam through the incisal edge with the labial half of the crown remaining dark.