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Journal of Clinical Periodontology Nov 2022To test whether the emergence profile (CONVEX or CONCAVE) of implant-supported crowns influences the mucosal margin stability up to 12 months after insertion of the... (Randomized Controlled Trial)
Randomized Controlled Trial
AIM
To test whether the emergence profile (CONVEX or CONCAVE) of implant-supported crowns influences the mucosal margin stability up to 12 months after insertion of the final restoration.
MATERIALS AND METHODS
Forty-seven patients with a single implant in the anterior region were randomly allocated to one of three groups: (1) CONVEX (n = 15), implant provisional and an implant-supported crown both with a convex profile; (2) CONCAVE (n = 16), implant provisional and an implant-supported crown both with a concave profile; (3) CONTROL (n = 16), no provisional (healing abutment only) and an implant-supported crown. All patients were recalled at baseline, 6, and 12 months. The stability of mucosal margin along with clinical, aesthetic, and profilometric outcomes as well as time and costs were evaluated. To predict the presence of recession, multivariable logistic regressions were performed and linear models using generalized estimation equations were conducted for the different outcomes.
RESULTS
Forty-four patients were available at 12 months post-loading. The frequency of mucosal recession amounted to 64.3% in group CONVEX, 14.3% in group CONCAVE, and 31.4% in group CONTROL. Regression models revealed that a CONVEX profile was significantly associated with the presence of recessions (odds ratio: 12.6, 95% confidence interval: 1.82-88.48, p = .01) compared with the CONCAVE profile. Pink aesthetic scores amounted to 5.9 in group CONVEX, 6.2 in group CONCAVE, and 5.4 in group CONTROL, with no significant differences between the groups (p = .735). Groups CONVEX and CONCAVE increased the appointments and costs compared with the CONTROL group.
CONCLUSIONS
The use of implant-supported provisionals with a CONCAVE emergence profile results in a greater stability of the mucosal margin compared with a CONVEX profile up to 12 months of loading. This is accompanied, however, by increased time and costs compared with the absence of a provisional and may not necessarily enhance the aesthetic outcomes.
TRIAL REGISTRATION
German Clinical Trials Register; DRKS00009420.
Topics: Crowns; Dental Implants; Dental Implants, Single-Tooth; Dental Prosthesis, Implant-Supported; Esthetics, Dental; Humans
PubMed: 35817419
DOI: 10.1111/jcpe.13696 -
Clinical Oral Investigations Jun 2023The FDI criteria for the evaluation of direct and indirect dental restorations were first published in 2007 and updated in 2010. Meanwhile, their scientific use...
OBJECTIVES
The FDI criteria for the evaluation of direct and indirect dental restorations were first published in 2007 and updated in 2010. Meanwhile, their scientific use increased steadily, but several questions from users justified some clarification and improvement of the living document.
MATERIALS AND METHODS
An expert panel (N = 10) initiated the revision and consensus process that included a kick-off workshop and multiple online meetings by using the Delphi method. During and after each round of discussion, all opinions were collected, and the aggregated summary was presented to the experts aiming to adjust the wording of the criteria as precisely as possible. Finally, the expert panel agreed on the revision.
RESULTS
Some categories were redefined, ambiguities were cleared, and the descriptions of all scores were harmonized to cross-link different clinical situations with possible management strategies: reviewing/monitoring (score 1-4), refurbishment/reseal (score 3), repair (score 4), and replacement (score 5). Functional properties (domain F: fracture of material and retention, marginal adaptation, proximal contact, form and contour, occlusion and wear) were now placed at the beginning followed by biological (domain B: caries at restoration margin, hard tissue defects, postoperative hypersensitivity) and aesthetic characteristics (domain A: surface luster and texture, marginal staining, color match).
CONCLUSION
The most frequently used eleven categories of the FDI criteria set were revised for better understanding and handling.
CLINICAL RELEVANCE
The improved description and structuring of the criteria may help to standardize the evaluation of direct and indirect restorations and may enhance their acceptance by researchers, teachers, and dental practitioners.
Topics: Humans; Dental Restoration, Permanent; Composite Resins; Dentists; Dental Restoration Failure; Esthetics, Dental; Professional Role; Dental Caries; Dental Marginal Adaptation; Follow-Up Studies; Surface Properties; Color
PubMed: 36504246
DOI: 10.1007/s00784-022-04814-1 -
Clinical Oral Implants Research May 2022To compare screw-retained and cemented all-ceramic implant-supported single crowns regarding biological and technical outcomes over a 5-year observation period. (Randomized Controlled Trial)
Randomized Controlled Trial
OBJECTIVES
To compare screw-retained and cemented all-ceramic implant-supported single crowns regarding biological and technical outcomes over a 5-year observation period.
MATERIALS AND METHODS
In 44 patients, 44 two-piece dental implants were placed in single-tooth gaps in the esthetic zone. Patients randomly received a screw-retained (SR) or cemented (CR) all-ceramic single crown and were then re-examined annually up to 5 years. Outcome measures included: clinical, biological, technical, and radiographic parameters. Data were statistically analyzed with Wilcoxon-Mann-Whitney, Wilcoxon, and Fisher's exact tests.
RESULTS
During the observation period, three patients (6.8%) were loss to follow-up. Eight restorations (18.2%, CI (8.2%, 32.7%)) were lost due to technical (6 patients, 13.6% (CI (5.2%, 27.4%)), 2 CR and 4 SR group, intergroup p = .673; implants still present) or biological complications (2 patients, 4.5% (CI (0.6%, 16.5%)), only CR group, intergroup p = .201, both implants lost). This resulted in a survival rate of 81.2% (CI (65.9%, 90.1%)) on the restorative level (18 SR; 15 CR, 3 lost to follow-up). At the 5-year follow-up, the median marginal bone levels were located slightly apical relative to the implant shoulder with 0.4 mm (0.5; 0.3) (SR) and 0.4 mm (0.8; 0.3) (CR) (intergroup p = .582). Cemented restorations demonstrated a significantly higher biological complication rate (36.8%, SR: 0.0%; intergroup p = .0022), as well as a significantly higher overall complication rate (68.4%, SR: 22.7%, intergroup p = .0049). All other outcomes did not differ significantly between the two groups (p > .05).
CONCLUSIONS
All-ceramic single-tooth restorations on two-piece dental implants resulted in a relatively low survival rate. Cemented restorations were associated with a higher biological and overall complication rate than screw-retained restorations.
Topics: Bone Screws; Crowns; Dental Abutments; Dental Implants; Dental Implants, Single-Tooth; Dental Porcelain; Dental Prosthesis, Implant-Supported; Dental Restoration Failure; Esthetics, Dental; Humans; Zirconium
PubMed: 35224774
DOI: 10.1111/clr.13913 -
BioMed Research International 2021
Topics: Computer-Aided Design; Dental Implants; Dentistry; Guidelines as Topic; Humans; Inventions; Prostheses and Implants
PubMed: 35155668
DOI: 10.1155/2021/9852932 -
Medicina (Kaunas, Lithuania) Sep 2022The report describes a technique using a diagnostic mock-up as a crown-lengthening surgical guide to improve the gingival architecture. The patient's primary concern...
The report describes a technique using a diagnostic mock-up as a crown-lengthening surgical guide to improve the gingival architecture. The patient's primary concern was improving her smile due to her "gummy smile" and short clinical crowns. After clinical evaluation, surgical crown lengthening accompanied by maxillary central full-coverage single-unit prostheses and lateral incisor veneers was recommended. The diagnostic mock-up was placed in the patient's maxillary anterior region and used as a soft tissue reduction guide for the gingivectomy. Once the planned gingival architecture was achieved, a flap was reflected to proceed with ostectomy in order to obtain an appropriate alveolar bone crest level using the overlay. After six months, all-ceramic crowns and porcelain veneers were provided as permanent restorations. A diagnostic mock-up fabricated with a putty guide directly from the diagnostic wax-up can be an adequate surgical guide for crown-lengthening procedures. The diagnostic wax-up was used to fabricate the diagnostic mock-up. These results suggested that it can be used as a crown-lengthening surgical guide to modify the gingival architecture. Several advantages of the overlay used in the aesthetic complex case include: (1) providing a preview of potential restorative outcomes, (2) allowing for the appropriate positioning of gingival margins and the desired alveolar bone crest level for the crown-lengthening procedure, and (3) serving as a provisional restoration after surgery. The use of a diagnostic mock-up, which was based on a diagnostic wax-up, as the surgical guide resulted in successful crown lengthening and provisional restorations. Thus, a diagnostic overlay can be a viable option as a surgical guide for crown lengthening.
Topics: Humans; Female; Crown Lengthening; Dental Porcelain; Gingivectomy; Crowns; Incisor
PubMed: 36295521
DOI: 10.3390/medicina58101360 -
BMC Oral Health Oct 2023Whilst the appropriate assessment criteria for dental biomaterials is debated, there has been an increasing interest in the use of dental biomaterials for oral...
Whilst the appropriate assessment criteria for dental biomaterials is debated, there has been an increasing interest in the use of dental biomaterials for oral rehabilitation. Consequently, a variety of new biomaterials have been introduced in dentistry. To address this issue, BMC Oral Health has launched a Collection on "New biomaterials for modern dentistry".
Topics: Humans; Biocompatible Materials; Dentistry
PubMed: 37899445
DOI: 10.1186/s12903-023-03531-9 -
Journal of Prosthodontic Research 2023
Topics: Denture, Partial; Denture, Partial, Removable
PubMed: 37839869
DOI: 10.2186/jpr.JPR_D_23_00246 -
Community Dental Health Nov 2023The British Association for the Study of Community Dentistry (BASCD) is marking its 50th anniversary in 2023. The author of this article has been a member of BASCD for...
The British Association for the Study of Community Dentistry (BASCD) is marking its 50th anniversary in 2023. The author of this article has been a member of BASCD for those 50 years, including a number as a member of the Council, and offers his personal reflections on some of the range of activities of the Association.
Topics: Humans; Community Dentistry; DMF Index; Dental Caries
PubMed: 37812526
DOI: 10.1922/CDH_00098French03 -
International Journal of Oral Science Sep 2023The dental operative microscope has been widely employed in the field of dentistry, particularly in endodontics and operative dentistry, resulting in significant... (Review)
Review
The dental operative microscope has been widely employed in the field of dentistry, particularly in endodontics and operative dentistry, resulting in significant advancements in the effectiveness of root canal therapy, endodontic surgery, and dental restoration. However, the improper use of this microscope continues to be common in clinical settings, primarily due to operators' insufficient understanding and proficiency in both the features and established operating procedures of this equipment. In October 2019, Professor Jingping Liang, Vice Chairman of the Society of Cariology and Endodontology, Chinese Stomatological Association, organized a consensus meeting with Chinese experts in endodontics and operative dentistry. The objective of this meeting was to establish a standard operation procedure for the dental operative microscope. Subsequently, a consensus was reached and officially issued. Over the span of about four years, the content of this consensus has been further developed and improved through practical experience.
Topics: Humans; Dentistry, Operative; Consensus; Endodontics; Root Canal Therapy; Dental Care
PubMed: 37723147
DOI: 10.1038/s41368-023-00247-y -
Acta Clinica Croatica Mar 2022Throughout history, Osijek and Slavonia were parts of numerous empires and states. In this paper, the authors depict dental health care of the inhabitants of Osijek and... (Review)
Review
Throughout history, Osijek and Slavonia were parts of numerous empires and states. In this paper, the authors depict dental health care of the inhabitants of Osijek and Slavonia throughout their history, since the ancient prehistoric times when dental medicine and medicine in general were 'in the hands' of gods and medicine men, throughout the period of the Roman Empire and Middle Ages, as well as the Turkish sovereignty, all the way to the modern era when Osijek and Slavonia became part of the Austrian Empire and many novelties were introduced in the society, among other things, and for those times, modern procedures of medicine and dental protection. Those were the true beginnings of medicine and dental protection. The authors illustrate the work of various 'dentists' who worked in Osijek, from military and town surgeons, barbers, and especially the work of doctors that needed to have formal school and specialist education after the reforms implemented in the 19 century. Thanks to the reforms of the Austrian, and later the Austrian-Hungarian authorities, the practice and work of people who were allowed to perform dental procedures started being regulated, prices were established, and punishments introduced for those who performed dental procedures without having the proper qualifications.
Topics: Humans; Male; Middle Aged; Medicine; Dentistry; Oral Medicine; Croatia
PubMed: 36398084
DOI: 10.20471/acc.2022.61.01.11