%0 Randomized Controlled Trial
%T Randomised controlled trial on testing an increased vertical dimension of occlusion prior to restorative treatment of tooth wear.
%A Crins LAMJ
%A Opdam NJM
%A Kreulen CM
%A Bronkhorst EM
%A Huysmans MDNJM
%A Loomans BAC
%J J Oral Rehabil
%V 50
%N 4
%D Apr 2023
%M 36582043
%F 3.558
%R 10.1111/joor.13408
%X <B>BACKGROUND: </B>Evaluation of a new vertical dimension of occlusion (VDO) in complex restorative treatments is considered a necessary step prior to placement of restorations.<BR><B>OBJECTIVE: </B>This randomised controlled trial (RCT) aimed to assess the effects of using an evaluation of a VDO increase before restorative treatment in patients with moderate-to-severe tooth wear, on OHRQoL, freeway space (FWS) and interventions to restorations.<BR><B>METHODS: </B>Forty-two patients with tooth wear were included and randomly allocated to either a test phase with a Removable Appliance (RA) or no test phase. Restorative treatment consisted of restoration of all teeth using composite restorations in an increased VDO. OHIP-score, freeway space (FWS) and clinical acceptability of restorations were assessed at baseline and at recall appointments (1 month and 1 year). Intervention to restoration was scored in case of material chipping or when the abutment tooth had increased sensitivity that could be linked to occlusal overloading. ANCOVA analyses, Univariate Cox regression, t-tests and descriptive analyses were performed (p < .05).<BR><B>RESULTS: </B>Clinical follow-up after 1 year was completed for 41 patients. No significant effect of testing the VDO with a RA could be found on the OHIP-score (p = .14). Reduction of FWS in the RA group, compared to the control group, was significantly lower at 1 year (p = .01, 95% CI -1.09 to -0.15). No effect on early interventions to restorations was found (p = .94).<BR><B>CONCLUSIONS: </B>This RCT showed that a removable appliance is not indicated to functionally test the increased VDO prior to restorative treatment in patients with tooth wear.