Abstract
ObjectivesThis study assessed the survival and maintenance needs of splinted teeth in periodontitis patients. MethodsPatients receiving active and supportive periodontal treatment involving teeth splinting in a university setting were retrospectively assessed. Tooth and splint survival and number of splint-repairs were recorded. Multilevel Cox and generalized-mixed linear regression analyses were performed. ResultsFifty-seven patients with 227 splinted teeth (maxilla/mandible: 148/79) were followed over mean ± SD 11.0 ± 7.2 [range: 2.0–32.4]) years. Twenty-six splinted teeth were extracted during this period, the mean (95% CI) time of splint retention was 7.3 ± 5.7 (0.1–22.7). Splinted teeth did not show significantly increased risk of tooth loss compared with non-splinted teeth (HR; 95% CI: 1.30; 0.87–1.93); while age (1.07; 1.05–1.09), PPD >6 mm (4.24; 1.26–14.31), bone loss (mean HR was 5.07–15.36 depending on severity), tooth location (posterior versus anterior teeth: HR 2.08; 1.24–3.49) and the number of occlusal contact areas (mean HR was 4.38–17.34 depending on the number of antagonistic contact areas) were associated with tooth loss. 75.3% splints required repair, with a mean of 2.6 ± 1.9 [1.0–8.0] repairs per splint during the mean observation time (0.4 ± 0.6 [0.0–3.5] repairs per splint/year). ConclusionSplinting did not significantly increase the risk of tooth loss; splinted teeth showed long-term survival. To maintain splints, frequent repairs were needed. Clinical significanceSplinted teeth were not at significantly higher risk of tooth loss than non-splinted teeth. While splinting does not improve the prognosis of periodontally affected teeth, it can assist their retention by reducing their mobility.
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