Retention of teeth in the fracture gaps of the mandible: a retrospective analysis.

Walker, Linus Josef; Koba, Sabine; Demiroglu, Aktug; Saulacic, Nikola; Burkhard, John-Patrik (2023). Retention of teeth in the fracture gaps of the mandible: a retrospective analysis. Clinical oral investigations, 27(10), pp. 6055-6061. Springer 10.1007/s00784-023-05218-5

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OBJECTIVES

Since the introduction of miniplate osteosynthesis and the use of prophylactic antibiotics, the complication rate related to the teeth in the fracture gap has significantly decreased. Currently, there are still no established guidelines for the management of such teeth in mandibular fracture lines. However, the long-term viability of these teeth within the fracture gap remains uncertain. Therefore, this study aimed to assess the survival rate of teeth located within the mandibular fracture line and evaluate related follow-up treatments over a minimum period of one year.

MATERIALS AND METHODS

This retrospective study examined 184 patients who underwent surgical treatment for mandibular fractures between January 2018 and December 2021. A total of 189 teeth located in the fracture line were analyzed. Clinical and radiological parameters were collected, including patient age and gender, fracture etiology and location, intraoperative tooth treatment, as well as complications related to both the fracture and the affected teeth in long term.

RESULTS

Most of the examined teeth remained uneventful, with postoperative tooth-related complications seen in 14 (7.4%) teeth. The most common complications were symptomatic apical periodontitis (n = 9, 4.8%) and increased tooth mobility (n = 3, 1.5%). A correlation was found between complications and trauma-related tooth luxation (p = 0.002, OR = 15.2), as well as prior teeth connected to retainers or orthodontic appliances (p = 0.001, OR = 10.32).

CONCLUSION

Tooth-related complications are rare when intact teeth are retained within the fracture gap. Therefore, unless there is a definitive intraoperative indication for extraction, it is recommended to preserve the teeth in the fracture line.

CLINICAL RELEVANCE

Intact teeth in the fracture line of the mandible should not be primarily extracted.

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