Effects of the Cervical Marginal Relocation Technique on the Marginal Adaptation of Lithium Disilicate CAD/CAM Ceramic Crowns on Premolars

Alahmari, Nasser M.; Adawi, Hafiz; Moaleem, Mohammed M. Al; Alqahtani, Faris Mohammed; Alshahrani, Fahad T; Aldhelai, Thiyezen Abdullah

doi:10.5005/jp-journals-10024-3138

Cited by 20 publications

(22 citation statements)

References 22 publications

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“…Operators in one clinical study performed DME without a matrix 24 . Two reports of clinical investigations and 12 reports of in vitro studies furnished no information on matrix use 7,19,21,25,27,29–31,33,39,40,43,46,47 . Circumferential metal matrices were used in nine laboratory studies 26,32,32,35–38,44,45 .…”

Section: Resultsmentioning

confidence: 99%

“…Figure 1 shows the results of the study selection process, which led to the inclusion of seven review articles, 4,13–18 six reports of clinical investigations, 19–24 24 reports of in vitro/in silico studies, 7,7,25–47 and one report of a dental healthcare survey 48 . Data extracted from these 38 articles are reported in detail in Tables 1, 2, 3, and 4.…”

Section: Resultsmentioning

confidence: 99%

“…Of the included studies, only in vitro investigations used leucite‐reinforced glass and feldspathic ceramics 30,31,33,43,46 . Evidence on crowns and endocrowns placed on DME is limited to three in vitro investigations 25,45,47 …”

Section: Resultsmentioning

confidence: 99%

“…7,26,27,[29][30][31][32][33]33,[35][36][37][39][40][41][42][43]45,46 Nine study reports did not specify whether permanent molars, deciduous molars, or both were used. 27,[32][33][34][35][36][39][40][41] Premolars were selected in four studies, 25,28,44,47 while one study used typodonts. 38 Except for the investigation that used typodonts, none of the included laboratory studies simulated physiological interproximal contacts.…”

Section: Teeth Used In In Vitro/in Silico Studiesmentioning

confidence: 99%

“…24 Two reports of clinical investigations and 12 reports of in vitro studies furnished no information on matrix use. 7,19,21,25,27,[29][30][31]33,39,40,43,46,47 Circumferential metal matrices were used in nine laboratory studies. 26,32,32,[35][36][37][38]44,45 A laboratory study on typodonts demonstrated the advantage of packing Teflon (PTFE) tape behind a sectional metal matrix placed within a circumferential metal matrix to obtain a tight marginal seal in deep proximal cavities.…”

Section: Matrixmentioning

confidence: 99%

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Deep margin elevation—Present status and future directions

Eggmann

Ayub

Conejo

et al. 2023

J Esthet Restor Dent

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Objective: Deep margin elevation (DME) is a treatment approach to relocate the cervical margin of teeth with subgingival defects to a supragingival position with a direct restoration to facilitate rubber dam isolation, impression taking, and bonding of indirect restorations. This article provides an overview of the current scientific evidence on DME and future directions for research. Overview:The review included 38 studies on DME, most conducted in vitro. These studies indicate that DME has no detrimental effect on the fracture resistance of restored teeth. Evidence on the impact of DME on marginal quality is conflicting, but most in vitro studies observed no negative effect. Clinical studies, most comprising small patient cohorts, demonstrated favorable restorative outcomes and suggest that DME restorations made with scrupulous care are compatible with periodontal health. Bleeding on probing may occur more frequently at sites with DME, though evidence on this is not unequivocal.Conclusions: Current evidence, based largely on laboratory studies and limited clinical data, supports DME as a viable approach to restore teeth with localized subgingival defects. However, further clinical studies with long-term follow-ups are required to provide corroborative evidence.Clinical Significance: Current evidence suggests that DME is a viable approach to restore teeth with localized subgingival defects as a possible alternative to surgical crown lengthening. Proper working field isolation, meticulous care in the bonding and buildup procedure, and biofilm removal through patient-performed oral hygiene and professional maintenance care are crucial. As scant clinical trial-based evidence is available today, further research is needed to evaluate the long-term performance of DME restorations and their impact on periodontal health.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Teeth Used In In Vitro/in Silico Studiesmentioning

confidence: 99%

Section: Matrixmentioning

confidence: 99%

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Deep margin elevation—Present status and future directions

Eggmann

Ayub

Conejo

et al. 2023

J Esthet Restor Dent

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Quality of CAD-CAM inlays placed on aged resin-based composite restorations used as deep margin elevation: a laboratory study

et al. 2023

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Objectives To assess the impact of the age of resin-based composite (RBC) restorations used for deep margin elevation (DME) on the marginal quality and fracture resistance of inlays. Materials and methods Permanent human molars with direct RBC restorations, involving the mesial, occlusal, and distal surface (MOD), were allocated to four groups (each n = 12). Half of the teeth underwent thermomechanical loading including 240,000 occlusal load cycles and 534 thermal cycles (TML, 5 °C/55 °C; 49 N, 1.7 Hz). With RBC left in one proximal box as DME, all teeth received MOD inlays, made from lithium disilicate (LDS) or a polymer-infiltrated ceramic network material (PICN). The restored teeth underwent TML including 1.2 million occlusal cyclic loadings and 2673 thermal cycles. The marginal quality was assessed at baseline and after both runs of TML. Load-to-fracture tests were performed. The statistical analysis comprised multiple linear regressions (α = 0.05). Results Simulated aging of RBC restorations had no significant effect on the marginal quality at the interface between the RBC and the tooth and the RBC and the inlay (p ≥ 0.247). Across time points, higher percentages of non-continuous margin were observed between the inlay and the tooth than between the tooth and the RBC (p ≤ 0.039). The age of the DME did not significantly affect the fracture resistance (p ≥ 0.052). Conclusions Artificial aging of RBC restorations used for DME had no detrimental effect on the marginal quality and fracture resistance of LDS and PICN inlays. Clinical relevance This laboratory study suggests that—in select cases—intact, direct RBC restorations not placed immediately before the delivery of an indirect restoration may be used for DME.

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Deep margin elevation in restorative dentistry: A scoping review

Taylor,

Burns

2024

Journal of Dentistry

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Effects of the Cervical Marginal Relocation Technique on the Marginal Adaptation of Lithium Disilicate CAD/CAM Ceramic Crowns on Premolars

Cited by 20 publications

References 22 publications

Deep margin elevation—Present status and future directions

Deep margin elevation—Present status and future directions

Quality of CAD-CAM inlays placed on aged resin-based composite restorations used as deep margin elevation: a laboratory study

Deep margin elevation in restorative dentistry: A scoping review

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