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The Journal of Oral Implantology Aug 2022
Topics: Dental Implants; Dental Prosthesis, Implant-Supported; Dental Restoration Failure; Survival Rate; Tooth
PubMed: 36054134
DOI: 10.1563/aaid-joi-D-22-Editorial.4804 -
British Dental Journal Jul 2021The ability to provide high-quality complete dentures is a key skill for the GDP. The increasing prevalence and utilisation of implant-supported overdentures has opened...
The ability to provide high-quality complete dentures is a key skill for the GDP. The increasing prevalence and utilisation of implant-supported overdentures has opened the possibility of a wide variety of treatment options to support patient care, while also creating the need for primary care practitioners to have a greater awareness of commonly used prosthetic attachments.A thorough understanding of the advantages and disadvantages of implant-supported overdentures is essential to ensuring appropriate treatment planning, consent and maintenance. This two-part series explores various aspects of implant-supported overdentures including assessment of the patient, treatment planning, different attachment systems and maintenance requirements.Part one will explore availability of implants in the NHS, the commonly available implant attachment systems, including their relative advantages and disadvantages.
Topics: Dental Implants; Dental Prosthesis, Implant-Supported; Denture Retention; Denture, Overlay; Humans; Mandible
PubMed: 34302089
DOI: 10.1038/s41415-021-3224-4 -
Compendium of Continuing Education in... 2021Along with the many technological advancements in implant-supported restorations that have impacted dentistry in recent years has come an evolution in clinical workflows... (Review)
Review
Along with the many technological advancements in implant-supported restorations that have impacted dentistry in recent years has come an evolution in clinical workflows and the dental materials to support them. Today, a synergy is rapidly forming in the dental industry among digital design, processing equipment, and restorative materials. This interaction is leading to increased clinical predictability supported by high-quality products. This review discusses the latest cutting-edge materials used in the restoration of implant-supported cases and how these materials fit into modern-day digital workflows.
Topics: Dental Implants; Dental Materials; Dental Prosthesis Design; Dental Prosthesis, Implant-Supported; Esthetics, Dental; Workflow
PubMed: 34297593
DOI: No ID Found -
Singapore Dental Journal Dec 2019: This narrative review provides an evidence-based overview of the comparison between mini-dental implants (MDI) and conventional dental implants for definitive... (Review)
Review
: This narrative review provides an evidence-based overview of the comparison between mini-dental implants (MDI) and conventional dental implants for definitive prosthesis retention. In addition, recommendations are made on whether the use of reduced diameter dental implants is more appropriate. : A literature review was conducted via electronic search addressing the following topics: (1) osseointegration, (2) peri-implant soft tissue characteristics, (3) biomechanics, (4) implant survival and (5) implant success. : The procedure for dental implant prosthetic rehabilitation should preferentially include conventional dental implants (i.e. [Formula: see text][Formula: see text]mm fixture diameter). Small (3-3.25[Formula: see text]mm) and narrow (3.3-3.5[Formula: see text]mm) dental implants should primarily be used in non-load-bearing regions. MDI ([Formula: see text][Formula: see text]mm) should be considered to retain definitive prosthesis, only for reasons of anatomy or patient-centred preferences and as a last resort. If MDI are to be used, patients should be made aware of the lack of long-term, high-quality evidence as a part of the informed consent process and that most of the prospective data available pertain to MDI retaining complete dentures.
Topics: Dental Implantation, Endosseous; Dental Implants; Dental Prosthesis Design; Dental Prosthesis, Implant-Supported; Humans; Osseointegration; Prospective Studies; Prosthesis Retention
PubMed: 31672092
DOI: 10.1142/S2214607519300015 -
Oral and Maxillofacial Surgery Clinics... Aug 2019Nitinol metal alloy that changes shape according to temperature has been in clinical use at select clinics worldwide for the past 2 years and is now released for... (Review)
Review
Nitinol metal alloy that changes shape according to temperature has been in clinical use at select clinics worldwide for the past 2 years and is now released for general use. The Smileloc Abutment and nitinol sleeve enable "cementless," "screwless," crown fastening that saves time and cost with the prospect of replacement of much of the present, sometimes troublesome, anthropic, soon to be anachronistic, technology.
Topics: Alloys; Dental Abutments; Dental Alloys; Dental Implants, Single-Tooth; Dental Prosthesis Design; Dental Prosthesis, Implant-Supported; Humans
PubMed: 31147105
DOI: 10.1016/j.coms.2019.03.006 -
Journal of Dental Research Aug 2023The aim of the study was to compare the clinical and radiographic outcomes of short dental implants (6-mm test group, TG) to longer implants (10-mm control group, CG)... (Randomized Controlled Trial)
Randomized Controlled Trial
The aim of the study was to compare the clinical and radiographic outcomes of short dental implants (6-mm test group, TG) to longer implants (10-mm control group, CG) with single crown restorations after 10 y of loading. Patients requiring single-tooth replacement in the posterior jaws were randomly assigned to TG or CG. Implants were loaded with screw-retained single crowns after a healing period of 10 wk. Follow-up appointments were scheduled yearly and comprised patient-adapted oral hygiene reinstructions and polishing of all teeth and implants. After 10 y, clinical and radiographical parameters were assessed again. Out of initially 94 patients (47 in TG and CG, each), 70 (36 TG and 34 CG) could be reassessed. Survival rates accounted for 85.7% (TG) and 97.1% (CG), without significant intergroup difference ( = 0.072). All but 1 lost implant had been located in the lower jaw. These implants were not lost due to peri-implantitis but due to a late loss of osseointegration without signs of inflammation and with actually stable marginal bone levels (MBLs) over the investigation period. In general, MBLs were stable with medians (interquartile ranges) of 0.13 (0.78) mm and 0.08 (1.2) mm, for TG and CG, without significant intergroup differences. Crown-to-implant ratio showed a highly significant intergroup difference of 1.06 ± 0.18 mm and 0.73 ± 0.17 mm ( < 0.001). Few technical complications (i.e., screw loosening or chipping) were registered during the investigation period. In conclusion, given stringent professional maintenance, short dental implants with single-crown restorations show a slightly worse but statistically not different survival rate after 10 y, especially in the lower jaw, but can still be considered a valuable alternative, especially when vertical bone dimensions are limited (German Clinical Trials Registry: DRKS00006290).
Topics: Humans; Dental Implants; Dental Implants, Single-Tooth; Crowns; Peri-Implantitis; Osseointegration; Follow-Up Studies; Dental Prosthesis, Implant-Supported; Dental Restoration Failure; Treatment Outcome; Alveolar Bone Loss; Dental Prosthesis Design
PubMed: 37387401
DOI: 10.1177/00220345231170538 -
International Journal of Computerized... Jul 2022The full-contact model has been widely used in tooth preparation and prosthesis fabrication. However, it is rarely used in denture tests. The purpose of the present...
AIM
The full-contact model has been widely used in tooth preparation and prosthesis fabrication. However, it is rarely used in denture tests. The purpose of the present study was to design a suitable full-contact dental model for denture tests.
MATERIALS AND METHODS
A standard dental model with the complete tooth morphology was raster scanned and 3D reconstructed. Then, the positioning and fixing surfaces of the dental model were reshaped. The dental model was digitally trimmed into two parts: a fundamental part and a replaceable part. The modular design was presented according to dentition defects around the first molar. The prepared tooth replicas were designed through preparation/scanning/registration/separation sequences. The dental model was fabricated by stereolithography (SLA) 3D-printing rapid prototype technology. The static fracture force of the dental model was predicted using the finite element method. The effects of the four design methods on the suitability of the five testing operations (abutment fabrication, prosthesis fabrication, assembling, loading, and observation) were quantitatively analyzed. The static tests of three fixed partial dentures (FPDs), including tooth-supported, implant-supported, and tooth-tooth-supported prostheses, were conducted to investigate the fracture feature. The dynamic test of a removable partial denture (RPD) was undertaken to study the wear characteristic.
RESULTS
The dental model could bear the maximum fracture strength of 4268.3 N. Seven positive and two negative effects of the design methods were produced. The maximum fracture strength of the FPDs were 1331.2 N, 1356.7 N, and 1987.7 N. The wear facets of the RPD in the dynamic denture test were distributed in three regions.
CONCLUSIONS
The force capacity of the full-contact dental model allows the application of static denture tests. The dental model provides improvements in fixture design, removable design, and replica design for the testing operations. The dental model is recommended more in the dynamic test than in the static test.
Topics: Dental Abutments; Dental Implants; Dental Prosthesis, Implant-Supported; Denture, Partial, Fixed; Humans; Models, Dental; Printing, Three-Dimensional
PubMed: 35060373
DOI: 10.3290/j.ijcd.b2588203 -
Clinical Oral Investigations May 2021To examine the retention force of removable dental prosthesis (RDP) clasps made from polyetheretherketone (PEEK) and cobalt-chrome-molybdenum (CoCrMo, control group)...
OBJECTIVES
To examine the retention force of removable dental prosthesis (RDP) clasps made from polyetheretherketone (PEEK) and cobalt-chrome-molybdenum (CoCrMo, control group) after storage in water and artificial aging.
MATERIALS AND METHODS
For each material, 15 Bonwill clasps with retentive buccal and reciprocal lingual arms situated between the second pre- and first molar were manufactured by milling (Dentokeep [PEEKmilled1], NT digital implant technology; breCAM BioHPP Blank [PEEKmilled2], bredent), pressing (BioHPP Granulat for 2 press [PEEKpressed], bredent), or casting (remanium GM 800+ [CoCrMo], Dentaurum); N = 60, n = 15/subgroup. A total of 50 retention force measurements were performed for each specimen per aging level (initial; after storage [30 days, 37 °C] and 10,000 thermal cycles; after storage [60 days, 37 °C] and 20,000 thermal cycles) in a pull-off test. Data were statistically analyzed using one-way ANOVA, post hoc Scheffé and mixed models (p < 0.05).
RESULTS
Initial, PEEKpressed (80.2 ± 35.2) and PEEKmilled1 (98.9 ± 40.3) presented the lowest results, while PEEKmilled2 (170.2 ± 51.8) showed the highest values. After artificial aging, the highest retention force was observed for the control group (131.4 ± 56.8). The influence of artificial aging was significantly higher for PEEK-based materials. While PEEKmilled2 and PEEKpressed showed an initial decline in retention force, all other groups presented no impact or an increase in retention force over a repetitive insertion and removal of the clasps.
CONCLUSIONS
Within the tested PEEK materials, PEEKmilled2 presented superior results than PEEKpressed. Although CoCrMo showed higher values after artificial aging, all materials exhibited sufficient retention to recommend usage under clinical conditions.
CLINICAL RELEVANCE
As RDPs are still employed for a wide range of indications, esthetic alternatives to conventional CoCrMo clasps are sought.
Topics: Benzophenones; Chromium Alloys; Cobalt; Dental Clasps; Dental Implants; Dental Prosthesis Retention; Dental Stress Analysis; Denture Retention; Denture, Partial, Removable; Esthetics, Dental; Ketones; Materials Testing; Molybdenum; Polyethylene Glycols; Polymers
PubMed: 33064206
DOI: 10.1007/s00784-020-03642-5 -
Journal of Prosthodontics : Official... Oct 2022To compare the outcomes of prosthodontic treatment for subjects wearing a complete maxillary denture opposing a root-supported mandibular overdenture (RSO) or an... (Review)
Review
PURPOSE
To compare the outcomes of prosthodontic treatment for subjects wearing a complete maxillary denture opposing a root-supported mandibular overdenture (RSO) or an implant-supported mandibular overdenture (ISO).
METHODS
A literature search was performed in seven electronic databases: MEDLINE via PubMed interface, Embase, Cochrane Library, Cumulative Index to Nursing and Allied Health Literature, Scopus, Web of Science, and AgeLine. The search terms were developed by the primary investigators and the health sciences librarian, who then started with PubMed and adapted the original search strategy for the other databases. Included articles were those that compared the outcomes for mandibular RSOs and those with ISOs, for persons wearing a maxillary complete denture.
RESULTS
Seven articles were included in the review. There were limitations in this review because of small sample sizes, short study durations, and different methodologies. Also, no comparative studies were identified for clinically important outcomes, such as survival rates of abutments, prosthodontics/maintenance problems, and longitudinal cost of care. For prosthodontic complications, patient satisfaction, and ability to clean, no differences were reported. For oral tactile sensibility, RSOs presented significantly improved sensibility, whereas ISOs had higher maximum bite force capability, but the difference was not statistically significant, except when subjects had a cross-bite or a lingualized occlusion.
CONCLUSIONS
The results of this scoping review were not conclusive, except for maximum bite force, where ISOs seem to perform better than RSOs by the measured criteria. ISOs had higher survival rates than RSOs, and required less maintenance, but were more expensive. It was disappointing to find so few studies comparing these clinical treatment modalities, which suggests that either treatment may be clinically acceptable and depends upon a shared decision between patients and their dentists.
Topics: Humans; Denture, Overlay; Dental Prosthesis, Implant-Supported; Dental Implants; Denture, Complete; Bite Force; Mandible; Patient Satisfaction; Denture Retention
PubMed: 35187751
DOI: 10.1111/jopr.13498 -
Journal of Oral Rehabilitation Dec 2023Adequate muscle activity is important for the success of oral rehabilitation: it maintains the integrity of the stomatognathic system and is responsible for chewing... (Review)
Review
BACKGROUND
Adequate muscle activity is important for the success of oral rehabilitation: it maintains the integrity of the stomatognathic system and is responsible for chewing movements needed to break, crush and grind food.
OBJECTIVE
To compare muscle activity using electromyography (EMG) while clenching or chewing soft and/or hard foods among individuals with natural dentition (ND) and edentulous patients rehabilitated with dental prostheses.
METHODS
This review was conducted until March, 2023, and the research question was "Is the muscle activity of edentulous patients rehabilitated with dental prostheses similar to that of dentate individuals?" A search strategy was conducted in PubMed/MEDLINE, The Cochrane Library, Web of Science, Lilacs, Embase and manual journal searches.
RESULTS
Ten studies were included in the analysis. Most of them reported that individuals with ND had significant higher muscle activity (clenching or chewing) than complete dentures (CD) users. However, no difference was observed between patients with full mouth implant-supported fixed dental prosthesis (ISFDP) and ND. Additionally, two studies compared patients with mandibular ISFDP with maxillary CD and individuals with ND and found no differences; however, one study concluded that patients with ISFDP with CD (maxillary or mandibular) had lower muscle activity than individuals with ND. Only one study reported a higher muscle activity in patients with full-mouth ISFDP than in individuals with ND.
CONCLUSIONS
Bimaxillary CD users had lower muscle activity than individuals with ND. During rehabilitation, the muscle activity of patients with full-mouth ISFDP and mandibular ISFDP with maxillary CD is similar to individuals with ND.
Topics: Humans; Dental Prosthesis, Implant-Supported; Mouth, Edentulous; Denture, Complete; Mastication; Muscles; Dental Implants; Denture, Overlay
PubMed: 37605296
DOI: 10.1111/joor.13564