Restoration of implant crowns with subgingival margins has always been a challenge. If done precisely it leads to better treatment outcomes and prognosis. An incorrect technique and improper execution of the luting procedure are known to cause a high incidence of peri-implant disease due to incomplete elimination of the luting agent. Deep subgingival abutment margins are difficult to recognize, and cement removal in these cases becomes complicated if the sulcus depth is greater than 3 mm. Irrespective of the type of instrument used to remove the excess cement, scratches on the abutment and some cement remnants are consistently noticed. Therefore elimination of excess luting agent before the prosthesis is inserted intraorally is considered an effective technique to prevent complications due to excess luting agent. This article presents a chairside universal technique for cementation of implant crowns on abutments with deep subgingival margins. This technique attempts to minimize the amount of excess cement in peri-implant tissue.
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http://dx.doi.org/10.1111/jopr.12450 | DOI Listing |
Cureus
November 2024
Department of Dentistry, Ministry of Health, Kuwait, KWT.
Clinical crown lengthening is a surgical procedure that involves the manipulation of gingival tissue, designed to expose sound tooth structure for restorative purposes by apically repositioning the gingival tissue, with or without the removal of alveolar bone. Crown lengthening may be subdivided as functional or esthetic, according to the purpose of treatment. Functional crown lengthening pertains to the exposure of subgingival caries, fractures, or to avoid invading the biologic width.
View Article and Find Full Text PDFColomb Med (Cali)
December 2024
Escuela de Odontología, Universidad del Valle, Cali, Colombia Universidad del Valle Escuela de Odontología Universidad del Valle Cali Colombia.
J Dent
November 2024
Department of Neurosciences, Reproductive and Odontostomatological Sciences, Division of Prosthodontics, Scientific Unit of Digital Dentistry, University "Federico II" of Naples, Naples, Italy.
Objectives: This study evaluated the accuracy of the Medit i700 intraoral scanner (IOS) in capturing horizontal tooth preparations at different depths below the gingival margin and assessed its ability to detect surfaces beyond the finish line.
Methods: Using CAD software, two abutments of a standard maxillary first molar were designed with horizontal preparation and 0.8 mm chamfer at 1 mm and 2 mm depths below the gingival margin.
Clin Oral Investig
November 2024
Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany.
Objectives: This prospective controlled clinical trial aimed to compare periodontal parameters of proximal deep-margin-elevation (DME) restoration margins with supragingival/equigingival restoration margins (control) on the opposite proximal surface of the same tooth.
Materials And Methods: Subgingival one-sided proximal defects (mesial or distal) on (pre-)molars were restored with composite DME and CAD/CAM-manufactured lithium disilicate ceramic partial-coverage restorations. Periodontal parameters (bleeding on probing (BOP), periodontal probing depths (PPD), plaque index (PI)) were recorded after insertion of the ceramic restoration (baseline) and at 1-year recall visit and compared between DME and control on the same tooth (Fisher's exact test and Wilcoxon signed rank test, p < 0.
Case Rep Dent
November 2024
Department of Operative Dentistry, School of Dentistry, Aichi Gakuin University, Nagoya 464-8651, Japan.
The esthetics of immediate implant dentistry can be challenging. Clinical considerations for immediate implant placement have demonstrated long-term success rates comparable to traditional delayed implant protocols. However, it is a sensitive technique that requires proper treatment planning as well as meticulous execution to be predictable and successful in the long term.
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