Work

Two-year evaluation of periodontal parameters following deep-margin-elevation and CAD/CAM partial lithium disilicate restorations – a prospective controlled clinical trial

Year: 2025

Type: article

Abstract: Objectives This prospective clinical trial evaluated periodontal parameters at proximal deep-margin-elevation (DME) restoration margins 2 years after placement and compared them with baseline values and with supragingival/equigingival margins (control) on the opposite proximal surface of the same tooth. Methods One-sided subgingival proximal defects in (pre-)molars were restored using composite DME and CAD/CAM-manufactured lithium disilicate partial restorations. Periodontal parameters (bleeding on probing (BOP), probing depths (PD), plaque index (PI)) were recorded after ceramic insertion (baseline) and at 2-year follow-up, and compared between DME and control (Fisher’s exact test and Wilcoxon signed rank test, p < 0.05). Results Sixty-eight patients with 77 restorations were included; 51 patients with 57 restorations were re-evaluated at 2 years. Two restorations were replaced (ceramic fracture, secondary caries), and one tooth developed apical periodontitis. Periodontal parameters were not significantly different at baseline. After 2 years, BOP increased significantly at the DME (p adj. = 0.010), but not at controls (p adj. = 0.517); but BOP was not significantly different between DME and control (p adj. = 0.110). PD was significantly higher in DME vs. control (p adj . = 0.015), but remained stable in both groups over the 2-year period (DME: p adj . = 0.171, control: p adj . = 0.517). PI increased significantly in both groups (p adj. < 0.001), but did not differ between both sides (p adj. = 0.341). Conclusion Proximal DME was associated with increased gingival inflammation at 2-year recall compared to baseline. Clinical significance DME is a promising approach for restoring teeth with deep proximal defects, but proximal DME is associated with increased gingival inflammation. The periodontal situation remains stable after the first year of placement.

Source: Journal of Dentistry

DOI: 10.1016/j.jdent.2025.105901

Authors: Tim Hausdörfer, Philipp Kanzow, Tina Rödig, Annette Wiegand, Clemens Lechte

Institutions: Universitätsmedizin Göttingen, University of Göttingen, Universitätsmedizin Greifswald, Universität Greifswald

Language: English

Topic: Dental materials and restorations

Subfield: Orthodontics

Field: Dentistry

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: hybrid

Estimated APC paid: $4,160