Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 9.839
Filtrar
1.
Quintessence Int ; 52(2): 132-137, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33433079

RESUMO

The extraction of a tooth with root resorption can be a complicated procedure and can result in the removal of a significant amount of alveolar bone. In the anterior maxilla, esthetic rehabilitation of damaged sites with implant-supported crown could require multiple surgeries. Patients often ask for an alternative, and minimally invasive treatments are generally preferred. In this paper, a clinical case of implant-supported crown in a site affected by root resorption is described. Immediate implant was placed leaving some root fragments in the osteotomy site, thus avoiding invasive extractive surgeries. A minimally invasive flapless technique with a computer-guided implant placement procedure was used. After ?8 years, clinical and radiologic data were stable, gingival tissues around the implant appeared healthy, no dark translucency appeared through marginal gingiva around the implant, and there was no pathologic probing pocket depth ?or bleeding on probing. In the presence of root resorption and ankylosis, computer-guided surgery could be helpful to prepare a precise implant site through various tissues, such as partially resorbed root remnants. (Quintessence Int 2021;52:132-137; doi: 10.3290/j.qi.a45432).


Assuntos
Implantes Dentários para Um Único Dente , Implantes Dentários , Carga Imediata em Implante Dentário , Computadores , Coroas , Implantação Dentária Endo-Óssea , Prótese Dentária Fixada por Implante , Estética Dentária , Humanos , Maxila/cirurgia , Extração Dentária , Resultado do Tratamento
2.
J Prosthet Dent ; 125(1): 138.e1-138.e8, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33393474

RESUMO

STATEMENT OF PROBLEM: Mini implants (<3 mm in diameter) are being used as an alternative to standard implants for implant-retained mandibular overdentures; however, they may exhibit higher stresses at the crestal level. PURPOSE: The purpose of this finite element analysis study was to evaluate the biomechanical behavior (stress distribution pattern) in the mandibular overdenture, mucosa, bone, and implants when retained with 2 standard implants or 2 mini implants under unilateral or bilateral loading conditions. MATERIAL AND METHODS: A patient with edentulous mandible and his denture was scanned with cone beam computed tomography (CBCT), and a 3D mandibular model was created in the Mimics software program by using the CBCT digital imaging and communications in medicine (DICOM) images. The model was transferred to the 3Matics software program to form a 2-mm-thick mucosal layer and to assemble the denture DICOM file. A 12-mm-long standard implant (Ø3.5 mm) and a mini dental implant (Ø2.5 mm) along with the LOCATOR male attachments (height 4 mm) were designed by using the SOLIDWORKS software program. Two standard or 2 mini implants in the canine region were embedded separately in the 3D assembled model. The base of the mandible was fixed, and vertical compressive loads of 100 N were applied unilaterally and bilaterally in the first molar region. The material properties for acrylic resin (denture), titanium (implants), mucosa (tissue), and bone (mandible) were allocated. Maximum von Mises stress and strain values were obtained and analyzed. RESULTS: Maximum stresses of 9.78 MPa (bilaterally) and 11.98 MPa (unilaterally) were observed in 2 mini implants as compared with 3.12 MPa (bilaterally) and 3.81 MPa (unilaterally) in 2 standard implants. The stress values in the mandible were observed to be almost double the mini implants as compared with the standard implants. The stresses in the denture were in the range of 3.21 MPa and 3.83 MPa and in the mucosa of 0.68 MPa and 0.7 MPa for 2 implants under unilateral and bilateral loading conditions. The strain values shown similar trends with both implant types under bilateral and unilateral loading. CONCLUSIONS: Two mini implants generated an average of 68.15% more stress than standard implants. The 2 standard implant-retained overdenture showed less stress concentration in and around implants than mini implant-retained overdentures.


Assuntos
Implantes Dentários , Revestimento de Dentadura , Prótese Dentária Fixada por Implante , Análise do Estresse Dentário , Retenção de Dentadura , Análise de Elementos Finitos , Humanos , Mandíbula/diagnóstico por imagem , Padrões de Referência , Estresse Mecânico
3.
Clin Oral Implants Res ; 32(1): 75-87, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33210771

RESUMO

OBJECTIVES: To compare the marginal bone level around implants with a thin multi-phosphonate coated surface after either an early or conventional loading protocol. MATERIAL AND METHODS: A randomized pilot clinical trial was conducted. Dental impressions were obtained after either 4 (test) or 8 weeks (control) and single crowns screwed-in 2 weeks later. Several variables were evaluated including radiographical marginal bone level (MBL), patient's level variables, and those related to the restoration and surrounding tissues. These data were obtained at several time points up to a 1-year follow-up. RESULTS: Thirty-four patients were included in the study, 18 assigned to the test group. No differences at implant placement were detected for tissue thickness, keratinized mucosa, nor any other clinical or radiological variable. At the time of impressions, tissue was thinner in the test group (2.30 (0.46) versus 2.78 (0.66) mm, test versus control, respectively; p = .012) so shorter abutments were used in this group. Regardless, no significant changes in marginal bone level were detected neither within group along time nor between groups. The average MBL at the 1-year follow-up was -0.15 (0.32) versus -0.22 (0.37) (p = .443) (test versus control, respectively). None of the clinical or radiological variables evaluated had a determinant influence on the MBL at any visit nor group. CONCLUSION: The use of implants with a multi-phosphonate coated surface for early loading offers successful radiographical outcomes 1 year after loading. MBL over time was not affected by taking the impressions 4 or 8 weeks after implant placement and loading them 2 weeks later.


Assuntos
Perda do Osso Alveolar , Implantes Dentários , Carga Imediata em Implante Dentário , Organofosfonatos , Perda do Osso Alveolar/diagnóstico por imagem , Coroas , Implantação Dentária Endo-Óssea , Prótese Dentária Fixada por Implante , Humanos , Projetos Piloto
4.
Clin Oral Implants Res ; 32(1): 15-22, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33025645

RESUMO

OBJECTIVE: The aim of this multicenter, randomized controlled trial was to compare the clinical and radiographic outcomes of 6-mm or 11-mm implants, placed in the posterior maxilla and mandible, during a 5-year follow-up period. MATERIALS AND METHODS: Ninety-five patients with adequate bone height for 11-mm implants, were randomly allocated to a 6-mm group (test group with short implants) or an 11-mm group (control group with standard-length implants). Two or three implants of the same length were placed in each patient and after 6 weeks loaded with a splinted provisional restoration. This was followed by definitive splinted restoration 6 months after implant placement. Clinical and radiographic parameters, including the occurrence of complications were recorded. RESULTS: A total of 49 patients were enrolled to receive 6-mm implants (n = 108) and 46 patients to receive 11-mm implants (n = 101). Three implants (two of 6 mm and one of 11 mm in length) were lost before loading and one 6-mm implant after 15 months of function, and one 11-mm implant was lost during the first year of function. The 5-year survival rates were 96.0% and 98.9% in the 6-mm and 11-mm group, respectively. The mean marginal bone level changes 5 years post-loading were 0.01 ± 0.45 mm (bone gain) in the 6-mm group and -0.12 ± 0.93 mm (bone loss) in the 11-mm group (p = .7670). Clinical parameters, including plaque, bleeding on probing and pocket probing depth were not significantly different between the groups, and also technical complications were low. CONCLUSION: The clinical and radiographic outcomes of 6-mm short and 11-mm standard-length implants were not different during a 5-year evaluation period.


Assuntos
Perda do Osso Alveolar , Implantes Dentários , Carga Imediata em Implante Dentário , Perda do Osso Alveolar/diagnóstico por imagem , Perda do Osso Alveolar/etiologia , Implantação Dentária Endo-Óssea , Planejamento de Prótese Dentária , Prótese Dentária Fixada por Implante , Falha de Restauração Dentária , Seguimentos , Humanos , Resultado do Tratamento
5.
Odontology ; 109(1): 284-294, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32749561

RESUMO

Evaluate, through a randomized clinical trial, the efficacy of brushing associated with oral irrigation in maintaining implant and overdenture hygiene. Thirty-eight participants, who had a clinically acceptable conventional maxillary complete denture and mandibular overdenture retained by either implants or mini-implants using an O-ring-retained system, were enrolled to participate in the study. They were instructed to use two different hygiene methods, in a random sequence for a period of 14 days, with a 7-day wash-out interposed period: (I) mechanical brushing (MB); (II) association of mechanical brushing with oral irrigation (WP). Biofilms from both subgingival sulci and overdentures were collected and processed by Checkerboard DNA-DNA hybridization method at baseline and after using the proposed hygiene protocols. Comparisons were performed using Wilcoxon test and Friedman test with Benjamini-Hochberg false discovery rate, followed by Conover post-hoc test (α = 0.05). In the subgingival sulci-related biofilm, a lower number of microbial cells were detected, after WP compared to the MB method (P < 0.001). The findings of overdenture-related biofilm suggest that both methods were similar (P = 0.607) being the identified microbiota qualitatively coincident after each method. Despite the number of microbial counts, it was concluded that the association of mechanical brushing with oral irrigation was more effective in reducing microorganisms in the subgingival sulci biofilm; however, the same outcome was not observed in the overdentures.


Assuntos
Implantes Dentários , Revestimento de Dentadura , Prótese Dentária Fixada por Implante , Retenção de Dentadura , Prótese Total Inferior , Humanos , Higiene , Mandíbula
6.
Spec Care Dentist ; 41(1): 78-84, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33270928

RESUMO

INTRODUCTION/AIMS: The edentulous mandibular ridge and associated shallow vestibule are often seen as a challenge in the oral rehabilitation of patients. Dental implants can provide an improvement in mastication and patient satisfaction. The aim of this study is to utilize a preprosthetic mucosal flap combined with a repositional periosteal flap concomitant with an alveoloplasty and placement of endosteal implants as a single-stage procedure in the anterior mandible. This approach provides a valued alternative for dental rehabilitation in patients with poor masticatory efficiency using a conventional denture. METHODS: Eight patients underwent the preprosthetic surgical plan in the oral surgery clinic of the dental school during a 1-year period. Age, sex, preoperative, and postoperative vestibular depth, as well as hard and soft tissue elements were measured (P < .05) at 4-6 months. RESULTS: Mean age was 53 years ± 14.62 (N = 8). Anterior mandible height was 19 ± 4.8 mm. A significant difference was measured using a two-tailed Student's t-test between pre- and postoperative vestibular depths, respectively (3.9 mm vs 10.5 ± 0.96 mm; P < .01). CONCLUSIONS: A lip switch vestibuloplasty combined with placement of two implants provide a one-stage procedure that is convenient, provides a shorter postoperative period, and can be financially affordable. Future research requires larger sampling to support this treatment as a standard of care.


Assuntos
Arcada Edêntula , Vestibuloplastia , Alveoloplastia , Implantação Dentária Endo-Óssea , Prótese Dentária Fixada por Implante , Humanos , Lactente , Arcada Edêntula/cirurgia , Lábio , Mandíbula/cirurgia , Pessoa de Meia-Idade
7.
Clin Oral Investig ; 25(1): 255-264, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32533264

RESUMO

OBJECTIVE: The purpose of this study was to evaluate and compare the effects of the immediate and delayed loading of strategic mini-implants (MIs) on the satisfaction of patients with removable partial dentures (RPDs). MATERIALS AND METHODS: In this multi-center randomized clinical trial, strategic MIs were inserted under 79 RPDs in 76 participants. Two questionnaires, one for the upper jaw and one for the lower jaw, were given before surgical intervention and 2 weeks, 4 months, 4.5 months, 1 year, 2 years, and 3 years after implant insertion. To estimate the loading effect (immediate vs. delayed) in terms of the odds ratio, an ordinal logistic regression model was used. The Wilcoxon matched-pairs signed-rank test, which was corrected for clusters in the patient population, was used to evaluate changes in patient satisfaction. RESULTS: After 4 months, a statistically significant difference in favor of the immediate loading group was recognized in terms of the overall satisfaction score. The patient satisfaction scores recorded after 4.5 months and 1, 2, and 3 years showed substantial improvements compared with the scores recorded before implant insertion in both groups. At the item level, substantial improvements were noted in the following domains: general satisfaction, RPD retention, stability, support, eating, speaking, and aesthetics. CONCLUSIONS: Strategic MIs improved the satisfaction of patients with RPDs during the medium-term follow-up period. An earlier improvement in the satisfaction of patients with RPDs was seen after immediate loading of the MIs as compared with delayed loading. CLINICAL RELEVANCE: Inserting MIs under existing RPDs can improve patients' satisfaction with their RPDs in several domains.


Assuntos
Implantes Dentários , Prótese Parcial Removível , Carga Imediata em Implante Dentário , Prótese Dentária Fixada por Implante , Estética Dentária , Humanos , Mandíbula/cirurgia , Satisfação do Paciente
8.
Clin Oral Implants Res ; 32(1): 23-36, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33043547

RESUMO

OBJECTIVES: Longitudinal evaluation of Oral Health-Related Quality of Life (OHRQoL) during treatment of flaplessly placed, one-piece mini-dental-implants (MDIs) for maxillary overdentures is rarely investigated, nor is the impact of MDI failures. MATERIAL AND METHODS: This multicenter prospective cohort study evaluated the 3-year outcome of 5-6 MDIs in the edentulous maxilla in patients above 50 years with dentate mandible. Provisional dentures were provided before final prosthetic connection was established at 6 months. Postoperative discomfort was assessed using a visual analogue score (VAS). OHRQoL was investigated using the Oral Health Impact Profile (OHIP)-14 at baseline (preoperatively), postoperatively, post-prosthetic connection and after 3 years in function. RESULTS: 164 (78.4%) of the 204 placed MDIs were still in situ after 3 years, in 29/31 patients. Two patients lost 5/6 MDIs resulting in two prosthetic failures (6.45%). With regard to pain, a score of 4.1/10 (SD 2.8) was recorded on day 1, and 1.1/10 (SD 1.7) on day 7. A decrease in total OHIP-14 scores was observed postoperatively (15.6; SD 12.8) as compared to baseline (21.3; SD 13.1), with improvement of OHRQoL. Furthermore, this was statistically significant at connection of the final prosthesis (7.3; SD 6.7) (p = .006). The OHIP-14 improved less (p = .011) when experiencing one or more implant losses (9.5; SD: 9.85), in comparison with no implant loss (20.7; SD: 13.97). A failure of one MDI did not affect OHIP-14 score (p = .658); however, multiple failures did (p = .007). CONCLUSION: Maxillary MDI overdenture treatment yields significant OHRQoL improvement when at least 5 MDIs survive, preserving functional comfort.


Assuntos
Implantes Dentários , Arcada Edêntula , Prótese Dentária Fixada por Implante , Revestimento de Dentadura , Humanos , Arcada Edêntula/cirurgia , Maxila/cirurgia , Satisfação do Paciente , Estudos Prospectivos , Qualidade de Vida , Resultado do Tratamento
9.
Clin Oral Implants Res ; 32(1): 37-43, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33211323

RESUMO

OBJECTIVES: To compare implant and prosthesis survival rates between full-arch immediate prostheses supported by 4 hydrophilic implants with bicortical anchorage and by 5 or 6 hydrophilic implants placed without bicortical anchorage. MATERIAL AND METHODS: The sample was retrospectively selected and comprised completely edentulous patients treated with full-arch immediate prostheses supported by Morse Taper hydrophilic implants. The selected patients were divided into four groups, according to the region of implant placement and type of anchorage. Differences in implant and prosthesis survival rates between groups, as well as the influence of bicortical anchorage on implant primary stability, were verified using Fisher's exact tests (significant at p < .05). RESULTS: The sample comprised 392 implants, 72 were placed in the maxilla with bicortical anchorage, and 85 were placed without. In the mandible, 140 implants were placed with and 95 were placed without bicortical anchorage. The follow-up period was up to 24 months. A 98.8% implant survival rate was observed for the group of implants placed without bicortical anchorage in the maxilla, and of 100% for the other groups. The overall implant survival rate was 99.7% (391 of 392 implants). Prosthesis survival rate was 100% for all groups. No differences were observed between groups with respect to implant and prosthesis survival rates. Significantly higher primary stability was observed for implants placed with bicortical anchorage in both jaws. CONCLUSION: Predictable results and high survival rates were achieved within the period evaluated by the present retrospective study, with immediate full-arch prostheses when only four hydrophilic implants are placed bicortically.


Assuntos
Implantes Dentários , Carga Imediata em Implante Dentário , Arcada Edêntula , Implantação Dentária Endo-Óssea , Prótese Dentária Fixada por Implante , Seguimentos , Humanos , Arcada Edêntula/cirurgia , Maxila/cirurgia , Falha de Prótese , Estudos Retrospectivos , Taxa de Sobrevida
10.
Clin Oral Implants Res ; 32(1): 44-59, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33222296

RESUMO

OBJECTIVES: This RCT compares marginal bone level (MBL) change and the clinical parameters after a 3-year function in maxillary implant-supported fixed complete dentures (FCDs) treated with four-implants (4-I) or six-implants (6-I). MATERIAL AND METHOD: Three centres treated 56 patients with 280 implants allocated to the 4-I or 6-I group. Radiographic and clinical examinations were performed. The primary outcome was to investigate MBL change between the groups. RESULTS: Implant survival rates were 100% and 99% in the 4-I and 6-I groups, respectively. Considering the clustering effects, the MBL change was not significantly different between the groups over the 3-year follow-up. The MBL in the 4-I group was 0.30 ± 0.50 mm at baseline, 0.24 ± 0.31 mm at 1 year and 0.24 ± 0.38 mm at 3 years. In the 6-I group, MBL was 0.14 ± 0.32 mm at baseline, 0.16 ± 0.35 mm at 1 year and 0.12 ± 0.26 mm at 3 years. There was a statistically significant difference between the groups at BL and 3Y. No significant differences between the groups were reported for clinical parameters at each time point as well as in between the visits. The technical and biological complications rates were 1.6% and 6.0%, respectively. Prosthetic complications affected 25 FCDs (47.2%). CONCLUSION: Marginal bone level change revealed a stable condition in the 3-year period in the two groups. Few technical and biological complications occurred apart from the chipping/fracture of the prosthetic teeth. Four-implant is a feasible solution if the rehabilitation is oriented towards the most cost-effective treatment and towards avoiding bone augmentation procedures. Clinicians have to consider the potential required visits for prosthetic maintenance.


Assuntos
Implantes Dentários , Prótese Maxilofacial , Prótese Dentária Fixada por Implante , Prótese Total , Seguimentos , Humanos , Titânio , Resultado do Tratamento
11.
Oral Dis ; 27(1): 27-41, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32048429

RESUMO

OBJECTIVES: This literature review reports the current evidence for the use of zygomatic implants in head and neck oncology patients for the prosthetic rehabilitation of defects of the mid-face and maxilla. METHODS: MEDLINE, Embase and Cochrane databases were searched using strict search terms. Two independent reviewers reviewed the articles and applied inclusion and exclusion criteria. RESULTS: Literature search revealed 437 articles, and following application of the inclusion criteria, 32 articles were included for analysis. Overall survival rates of 77%-100% were reported with few complications, although only four centres presented data on 20 or more patients. Primary implant placement at time of resective surgery has been shown to be an effective means of accelerating rehabilitation along with early loading protocols. The role of radiotherapy in implant failure has not been fully elucidated, and it is clear that zygomatic implants can be successfully used in the irradiated patient. Providing support for maxillary obturators was the most common use reported with both splinted and unsplinted implants. CONCLUSIONS: Zygomatic implants provide remote anchorage for a variety of oral and facial prostheses that contribute to the improved function and quality of life for patients being treated for maxillary and mid-facial tumours.


Assuntos
Implantes Dentários , Neoplasias , Implantação Dentária Endo-Óssea , Prótese Dentária Fixada por Implante , Humanos , Maxila/cirurgia , Qualidade de Vida , Zigoma/cirurgia
12.
Quintessence Int ; 52(1): 56-63, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33118004

RESUMO

Augmentation of alveolar ridge defects is a technique-sensitive procedure in dental implantology. Depending on the size of the defect, it may be necessary to use autogenous bone blocks. However, patients may be against these blocks as these procedures are surgically invasive.
Case report: This report describes the restoration of a partially edentulous mandible, which suffered a major bone defect from the right canine to the third molar site after multiple implant losses. The use of a CAD/CAM allogeneic cancellous bone block from a living donor bone was planned for the reconstruction of the alveolar ridge at the defected site. A CBCT scan was taken and the virtual planning of the bone augmentation and placement of four implants was performed. The milled bone block was fixed for augmentation and the implants were placed using a CBCT-generated surgical guide. After osseointegration, a CAD/CAM-fabricated screw-retained metal-ceramic implant fixed partial denture with angulated screw channels was delivered.
Results: The use of CAD/CAM-milled, allogeneic bone block resulted in a time-efficient and simplified reconstruction of the defect because no donor site was used, and the fit of the block on the native bone was uneventful and fast. At the 1-year follow-up, an average peri-implant vertical soft tissue decrease of 1 mm on buccal and 0.3 mm on lingual sites was observed and the peri-implant tissues were healthy.
Conclusions: The long-term success of this CAD/CAM cancellous bone block needs to be evaluated in well-designed clinical studies.

.


Assuntos
Aumento do Rebordo Alveolar , Implantes Dentários , Transplante de Células-Tronco Hematopoéticas , Parafusos Ósseos , Transplante Ósseo , Implantação Dentária Endo-Óssea , Prótese Dentária Fixada por Implante , Prótese Parcial Fixa , Humanos
13.
J Oral Rehabil ; 48(1): 81-94, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32989781

RESUMO

AIM: To review the literatures concerning the effect of the single-implant mandibular overdenture (SIMO) on patient-reported outcome measures (PROMs) and masticatory function in the fully edentulous patients. MATERIALS AND METHODS: Electronic databases (PubMed, Cochrane Library, EMBASE and Web of Science) were searched, complemented with manual resources. Prospective studies published in English up to February 2020 reporting the effect of SIMO on PROMs and masticatory function in the edentulous patients were included. This review focused on oral health-related quality of life (OHRQoL), satisfaction and masticatory function outcomes. RESULTS: Of 1157 initially screened articles, 9 randomised controlled trials (RCTs) and 8 prospective studies involving 551 subjects fulfilled the inclusion criteria. Two RCTs were graded as high risk of bias or some concern, while others were low risk. All prospective studies had adequate representativeness and assessment, but only one study had a controlled cohort. In general, the edentulous patients restored with SIMOs had improved OHRQoL and general satisfaction compared to those with conventional complete dentures (CCDs), but the outcome of masticatory function was controversial. Compared with two-implant mandibular overdenture (TIMO), SIMO showed no significant differences regarding general satisfaction and satisfaction with speech, comfort, chewing ability, aesthetics and social life. Conflicting results were observed in OHRQoL and satisfaction with retention and stability. Better masticatory performance was observed in TIMO group than SIMO group. CONCLUSION: Within the limitation of this review, SIMO is featured with better OHRQoL and satisfaction than CCD. SIMO and TIMO rendered similar patient satisfaction, but TIMO had better masticatory performance.


Assuntos
Revestimento de Dentadura , Boca Edêntula , Prótese Dentária Fixada por Implante , Estética Dentária , Humanos , Mandíbula , Mastigação , Medidas de Resultados Relatados pelo Paciente , Satisfação do Paciente , Qualidade de Vida
14.
J Prosthet Dent ; 125(1): 22.e1-22.e6, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33129499

RESUMO

Wear of artificial teeth is the most common complication associated with an implant-supported fixed complete denture (ISFCD). This wear alters the occlusal scheme, with loss of eccentric occlusal balance and vertical dimension of occlusion (VDO). This clinical report describes the fabrication of a new maxillary removable complete denture opposing an existing ISFCD with occlusal modifications. Both prostheses received splinted zirconia crowns cemented with composite resin cement.


Assuntos
Implantes Dentários , Materiais Dentários , Prótese Dentária Fixada por Implante , Prótese Total , Prótese Parcial , Dente Artificial
15.
J Prosthet Dent ; 125(1): 34-40, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32029216

RESUMO

The conventional method of diagnosing and treatment planning an implant-supported restoration involves making a diagnostic alginate impression and fabricating a radiographic and surgical guide. The procedure described uses an intraoral scanner and milling unit to fabricate a chairside computer-aided design and computer-aided manufacturing radiographic and surgical guide for use with a cone beam computed tomography system.


Assuntos
Implantes Dentários , Desenho Assistido por Computador , Tomografia Computadorizada de Feixe Cônico , Técnica de Moldagem Odontológica , Planejamento de Prótese Dentária , Prótese Dentária Fixada por Implante
16.
Dent Clin North Am ; 65(1): 135-165, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-33213707

RESUMO

More patients are requesting fixed prosthesis to replace missing teeth. More than 5 million dental implants are placed annually in the United States. This number will decrease in 2020 owing to the coronavirus disease-19 pandemic. The edentulous patient has a decreased quality of life. Prosthodontic rehabilitation/reconstruction of edentulism improves overall quality of life. Patient-reported outcome measures are subjective reports of patients' perceptions of their oral health status and the impact that it has on their quality of life. This chapter contains a variety of prosthodontic principles for the reader to help satisfy the needs and expectations of the patient.


Assuntos
Infecções por Coronavirus , Coronavirus , Implantes Dentários , Arcada Edêntula , Pandemias , Pneumonia Viral , Betacoronavirus , Prótese Dentária Fixada por Implante , Revestimento de Dentadura , Humanos , Pandemias/prevenção & controle , Qualidade de Vida
17.
J Oral Sci ; 63(1): 92-97, 2020 Dec 23.
Artigo em Inglês | MEDLINE | ID: mdl-33311012

RESUMO

PURPOSE: Implant component fractures are one of the most serious complications in implant treatment. With a better understanding of the risk factors for fracture in the preoperative, surgery, superstructure, and post-loading phases of implant treatment, low-risk treatment could reduce implant component fractures, leading to a better prognosis. The aim of this study was to clarify the risk factors for abutment and implant fractures that occur after loading, and to perform a retrospective, approximately 10-year follow-up study to explore the risk factors in each treatment phase. METHODS: Subjects were fitted with an implant prosthesis between January 2008 and December 2009. In total, 1,126 Ankylos implants in 430 patients were included for analysis. Binary logistic regression analysis was performed to extract factors related to non-fracture and fracture of the abutment or implant as a dependent variable. RESULTS: Gender (OR = 3.466, 95% CI 1.296-9.268, P = 0.013), gonial angle (OR = 3.420, 95% CI 1.308-8.945, P = 0.012), and splinting status of the superstructure (OR = 4.456, 95% CI 1.861-10.669, P = 0.001) were identified as significant risk factors. CONCLUSION: The risk of fracture is increased in males, especially those with a mandibular angle of less than 120° on panoramic radiographs, and those with a non-splinted superstructure.


Assuntos
Implantes Dentários , Implantes Dentários/efeitos adversos , Prótese Dentária Fixada por Implante , Falha de Restauração Dentária , Seguimentos , Humanos , Masculino , Mandíbula , Estudos Retrospectivos , Fatores de Risco
18.
J Can Dent Assoc ; 86: k11, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-33326369

RESUMO

OBJECTIVE: The aim of this study was to determine and analyze the survival rates of dental implants placed by undergraduate dental students under supervision at the University of Alberta's School of Dentistry over a 10-year period. METHODS: Charts from patients who received either single or multiple dental implants between 1 January 2007 and 31 July 2017 were reviewed. Patients' age, sex, American Society of Anesthesiologists (ASA) class and implant site data were extracted and compiled for statistical analysis. RESULTS: Of 299 implants placed in 189 patients, 1 failed and required removal. CONCLUSION: In this study, the survival rate of implants placed over a 10-year period was 99.7%. Supervision by certified specialists, strict case selection criteria and maintenance and care protocols at the university's dental clinic likely contribute to the high survival rate.


Assuntos
Implantes Dentários , Implantação Dentária Endo-Óssea , Prótese Dentária Fixada por Implante , Falha de Restauração Dentária , Seguimentos , Humanos , Estudos Retrospectivos , Estudantes de Odontologia
19.
Niger J Clin Pract ; 23(12): 1767-1771, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33355833

RESUMO

Alveolar bone loss subsequent to long-term edentulism and trauma may be severe and treatment plan is always an esthetic and functional challenge. Implant supported hybrid prosthesis is widely regarded as an effective treatment option for patients with excessive and irregular bone loss. However, implant placement is occasionally impossible without surgical procedures in such cases. This case report presents rehabilitation of 19-year-old maxillary anterior edentulous male patient with maxillary anterior bone defect and excessive cross-bite anterior closure with multidisciplinary approach. The patient was rehabilitated with implant supported hybrid prosthesis with Malo Bridge design following autogeneous iliac bone augmentation, teeth leveling with orthodontic treatment, and surgical placement of three implants. Esthetics, pleasing phonetics and function were achieved as desired with this treatment option and no complications were observed.


Assuntos
Perda do Osso Alveolar , Aumento do Rebordo Alveolar , Implantes Dentários , Arcada Edêntula , Procedimentos Cirúrgicos Reconstrutivos , Adulto , Perda do Osso Alveolar/cirurgia , Transplante Ósseo , Prótese Dentária Fixada por Implante , Humanos , Arcada Edêntula/cirurgia , Masculino , Maxila/cirurgia , Resultado do Tratamento , Adulto Jovem
20.
Rev. Odontol. Araçatuba (Impr.) ; 41(3): 33-39, set./dez. 2020. ilus
Artigo em Português | LILACS, BBO - Odontologia | ID: biblio-1121742

RESUMO

Este relato de caso clínico tem como objetivo descrever a utilização de osso alógeno na reconstrução de maxila atrófica para posterior reabilitação com prótese fixa metalocerâmica sobre implantes, fazer uma análise histológica do tecido ósseo enxertado e descrever o acompanhamento clínico e radiográfico por 8 anos. Uma paciente de 54 anos, com edentulismo parcial e atrofia moderada-a-severa na maxila, apresentou-se para tratamento demonstrando muito interesse em receber prótese sobre implantes. Após exame clínico e radiográfico, foi realizada montagem dos modelos de estudo em ASA para enceramento diagnóstico e obtenção de um guia multifuncional (tomográfico/ cirúrgico). A tomografia indicou a necessidade de reconstrução óssea maxilar. Procedeuse então à aposição de blocos de osso alógeno para aumento horizontal nas regiões anterior e posterior da maxila. Um dos blocos foi triturado e utilizado para levantamento do assoalho do seio maxilar no lado esquerdo. Dez meses depois, uma nova tomografia foi solicitada, utilizando o mesmo guia inicial, e os implantes instalados, utilizando o guia multifuncional como guia cirúrgico. Neste momento, material ósseo foi coletado na interface osso enxertado/osso nativo com uma broca trefina. Os resultados histológicos demonstraram viabilidade das células ósseas no enxerto, além da presença de vasos sanguíneos. Após o tempo necessário para osseointegração, procedeu-se com tratamento protético. Nenhuma complicação foi relatada até oito anos de controle. A sequência de tratamento proposta forneceu bons resultados estéticos e funcionais. Concluiu-se, então, que o emprego de osso alógeno é uma alternativa viável para a reconstrução de rebordos alveolares severamente reabsorvidos(AU)


This clinical case report aims to describe the use of allogeneic bone in the atrophic maxilla reconstruction for subsequent rehabilitation with a fixed metal-ceramic prosthesis on implants; to perform a histological analysis of the grafted bone tissue; and to describe the clinical and radiographic monitoring for 8 years. A 54-year-old patient, with partial edentulism and moderate-to-severe atrophy in the maxilla showed great interest in receiving implant prostheses. After c linical and radiographic examination, the ASA study models were assembled for diagnostic waxing and a multifunctional guide (tomographic / surgical) was obtained. Tomography indicated the need for maxillary bone reconstruction. Allogeneic bone blocks were then placed for horizontal enlargement in the anterior and posterior regions of the maxilla. One of the blocks was crushed and used to lift the floor of the maxillary sinus on the left side. Ten months later, a new tomography was requested, using the same initial guide, and the implants installed, using the multifunctional guide as a surgical guide. At this time, bone material was collected at the grafted bone / native bone interface with a trephine drill. Histological results demonstrated viability of bone cells in the graft, besides the presence of blood vessels. After the necessary time for osseointegration, a prosthetic treatment was performed. No complications were reported up to eight years of control. The propose treatment sequence provided good aesthetic and functional results. It was concluded, then, that the use of allogeneic bone is a viable alternative for the reconstruction of severely reabsorbed alveolar edges(AU)


Assuntos
Transplante Ósseo , Prótese Dentária Fixada por Implante , Planejamento de Prótese Dentária , Levantamento do Assoalho do Seio Maxilar
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA