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1.
Quintessence Int ; 52(2): 132-137, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33433079

RESUMEN

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).


Asunto(s)
Implantes Dentales de Diente Único , Implantes Dentales , Carga Inmediata del Implante Dental , Computadores , Coronas , Implantación Dental Endoósea , Prótesis Dental de Soporte Implantado , Estética Dental , Humanos , Maxilar/cirugía , Extracción Dental , Resultado del Tratamiento
2.
J Prosthet Dent ; 125(1): 138.e1-138.e8, 2021 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-33393474

RESUMEN

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.


Asunto(s)
Implantes Dentales , Prótesis de Recubrimiento , Prótesis Dental de Soporte Implantado , Análisis del Estrés Dental , Retención de Dentadura , Análisis de Elementos Finitos , Humanos , Mandíbula/diagnóstico por imagen , Estándares de Referencia , Estrés Mecánico
3.
Dent Clin North Am ; 65(1): 135-165, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-33213707

RESUMEN

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.


Asunto(s)
Infecciones por Coronavirus , Coronavirus , Implantes Dentales , Arcada Edéntula , Pandemias , Neumonía Viral , Betacoronavirus , Prótesis Dental de Soporte Implantado , Prótesis de Recubrimiento , Humanos , Pandemias/prevención & control , Calidad de Vida
4.
J Oral Sci ; 63(1): 92-97, 2020 Dec 23.
Artículo en Inglés | MEDLINE | ID: mdl-33311012

RESUMEN

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.


Asunto(s)
Implantes Dentales , Implantes Dentales/efectos adversos , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental , Estudios de Seguimiento , Humanos , Masculino , Mandíbula , Estudios Retrospectivos , Factores de Riesgo
5.
J Can Dent Assoc ; 86: k11, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-33326369

RESUMEN

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.


Asunto(s)
Implantes Dentales , Implantación Dental Endoósea , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental , Estudios de Seguimiento , Humanos , Estudios Retrospectivos , Estudiantes de Odontología
6.
Niger J Clin Pract ; 23(12): 1767-1771, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-33355833

RESUMEN

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.


Asunto(s)
Pérdida de Hueso Alveolar , Aumento de la Cresta Alveolar , Implantes Dentales , Arcada Edéntula , Procedimientos Quirúrgicos Reconstructivos , Adulto , Pérdida de Hueso Alveolar/cirugía , Trasplante Óseo , Prótesis Dental de Soporte Implantado , Humanos , Arcada Edéntula/cirugía , Masculino , Maxilar/cirugía , Resultado del Tratamiento , Adulto Joven
7.
Rev. Odontol. Araçatuba (Impr.) ; 41(3): 33-39, set./dez. 2020. ilus
Artículo en Portugués | LILACS, BBO - Odontología | ID: biblio-1121742

RESUMEN

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)


Asunto(s)
Trasplante Óseo , Prótesis Dental de Soporte Implantado , Diseño de Prótesis Dental , Elevación del Piso del Seno Maxilar
8.
Braz Dent J ; 31(6): 650-656, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33237237

RESUMEN

Patients with a history of cancer are increasingly common in the dental office. Treating cancer patients requires a multidisciplinary team, which should include the dentist, in order to control the complications that occur in the oral cavity and also to recover the patient undergoing treatment in any of its types: surgical, medical, radiotherapeutic, or its possible combinations. Dental implants can be a safe and predictable treatment option for prosthetic rehabilitation. The aim of this paper is to describe in retrospect the success rate of osseointegrated implants in oncology and non-oncology patients placed by the Master of Dentistry in Oncology and Immunocompromised Patients, as well as the Master of Medicine, Surgery and Oral Implantology of the University of Barcelona Dental Hospital, between July 2011 and March 2016. 466 patients were reviewed, with a total of 1405 implants placed, considering the oncological history of the patients and the implant success rate. The total success rate in the concerned period was 96.65%. When comparing cancer patients with healthy ones, the success rate has been 93.02% in the first case, and 97.16% in the latter. According to the literature review, our results encourage implant placement in cancer patients, it is important to recognize that this is an analysis of a complex care pathway with a large number of confounding variables. However, the findings should not be considered as generalizable.


Asunto(s)
Implantes Dentales , Neoplasias , Implantación Dental Endoósea , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental , Humanos , Estudios Retrospectivos , Resultado del Tratamiento
9.
Braz Dent J ; 31(6): 657-663, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33237238

RESUMEN

The aim of this study was to evaluate the effect of cleaning solutions on the retention force of o-ring-type overdenture attachments. The effect of four solutions on nitrile rings were evaluated: Cepacol (C), Cepacol with fluoride (CF), Listerine (L) and 0.05% sodium hypochlorite (SH); deionized water (DW) was used as a control. Matrices containing two implants and abutments and acrylic specimens with the metal capsules were obtained and divided into the groups. A simulation of 90 overnight immersions (8 h) was performed, and the tensile strength value was obtained at the beginning (T0) and in every 30 days (T1, T2 and T3) (n=6). In order to analyze o-ring surface damage after the immersions, a scanning electron microscopy (SEM) was used (n=1). For statistical analysis of the results, analysis of variance (ANOVA) and multiple comparisons with Bonferroni adjustment (test power=1.000; a=0.05) were used. There was a significant difference for the factors time (p<0.001), solution (p<0.001) and for the interaction time × solution (p<0.001). Considering the times of each solution, only for DW there was no significant loss of retention over time. Comparing the solutions in each moment, there was no difference among the solutions in T0. From T1, CF and SH provided less retention than DW (p<0.005). Through SEM it was possible to observe changes in the surface of the CF and SH nitrile o-rings. CF and SH should be avoided due to deleterious action in o-rings.


Asunto(s)
Prótesis de Recubrimiento , Hipoclorito de Sodio , Prótesis Dental de Soporte Implantado , Análisis del Estrés Dental , Retención de Dentadura , Ensayo de Materiales , Resistencia a la Tracción
10.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 55(11): 814-818, 2020 Nov 09.
Artículo en Chino | MEDLINE | ID: mdl-33171552

RESUMEN

Due to the highly predictable long-term clinical outcomes, modern implant dentistry has become one of the most preferred treatment modalities for restoring missing teeth. However, the complications of implant therapy compromise the long-term implant success and remain a great challenge to clinicians. Hardware complications include the mechanical complications which are related to the manufacturer-fabricated components of the prosthesis, such as abutment/screw loosening, fracture and implant fracture; and the technical complication which are related to laboratory-fabricated components of the prosthesis, such as veneer chipping. The biological complications mainly include peri-implant mucositis and peri-implantitis. It is crucial to figure out how to effectively avoid and manage the complications of implant therapy. This article reported the definitions, incidences, risk factors, prevention and treatment of both mechanical and biological complications of implant therapy.


Asunto(s)
Implantes Dentales , Periimplantitis , Estomatitis , Pérdida de Diente , Implantes Dentales/efectos adversos , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental , Humanos , Periimplantitis/etiología , Periimplantitis/prevención & control
11.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 55(11): 825-830, 2020 Nov 09.
Artículo en Chino | MEDLINE | ID: mdl-33171554

RESUMEN

Passive fit is a key prerequisite for successful implant-supported restorations, especially for full-arch implant-supported fixed restoration. The precise passive fit comes from the fine control of the entire manufacturing process of resorations. Intraoral welding directly connects the metal framework and the upper abutment in the mouth, which can ensure precise and stable passive fit. This article will explain the definition, necessity, influencing factors and clinical control methods of passive fit, in order to provide guidance for achieving precise passive fit in implant-supported full-arch prostheses.


Asunto(s)
Implantes Dentales , Soldadura , Prótesis Dental de Soporte Implantado
12.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 55(11): 864-870, 2020 Nov 09.
Artículo en Chino | MEDLINE | ID: mdl-33171560

RESUMEN

Objective: To evaluate long-term clinical outcome of implant-supported fixed prosthesis with the guidance of computer-aided design/computer-aided manufacturing (CAD/CAM) surgical template in old patients. Methods: Fifteen 50-67(58.6±5.3) year-old patients (11 males and 4 females) who received the digital implant surgery with the guidance of CAD/CAM surgical template and implant-supported fixed prosthesis in Department of Oral Implantology, Yantai Stomatological Hospital Affiliated to Binzhou Medical College from August, 2013 to Janurary, 2016 were included. There are 15 edentulous maxillas, 8 edentulous mandibles on which 145 implants were placed in total. After the placement of implant, the accuracy of CAD/CAM surgical template was assessed by comparing the post-operative 3-dimensional location of implant with the pre-operative design. The 5-year survival rate of implant and prosthesis was recorded, and marginal bone loss around implants and the development of complication were evaluated by radiological and clinical examination respectively. Results: The result on accuracy of CAD/CAM surgical template showed that deviations in neck and apex of implants were (0.78±0.59) and (1.38±0.63) mm respectively, depth deviation was (0.65±0.35) mm and angle deviation was 4.12°±2.77°. The 5-year cumulative survival rate of implants was 98.6%(143/145). In all 145 implants, the prevalence of implant-related biological complication was 4.1%(6/145). The prosthesis-related mechanical complication rate was 57%(13/23). After 5-year function, mean peri-implant bone loss was (0.69±0.35) mm. Conclusions: This 5-year follow-up retrospective study showed that implant-supported fixed prosthesis with the guidance of CAD/CAM surgical template in middle aged and elderly patients could achieve good long-term clinical outcome and patient satisfaction.


Asunto(s)
Implantes Dentales , Arcada Edéntula , Cirugía Asistida por Computador , Anciano , Diseño Asistido por Computadora , Implantación Dental Endoósea , Prótesis Dental de Soporte Implantado , Femenino , Humanos , Arcada Edéntula/cirugía , Masculino , Persona de Mediana Edad , Estudios Retrospectivos
13.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 55(11): 885-890, 2020 Nov 09.
Artículo en Chino | MEDLINE | ID: mdl-33171563

RESUMEN

Objective: To observe the changes of peri-implant tissue around the individualized abutment that was grinded from zirconia provisional crown in one year. Methods: In this research, a prosthodontic-driven virtual implant planning and immediate provisionalization were conducted in computer assisted design software. And computer-aided design/computer-aided manufacturing (CAD/CAM) techniques were used to fabricate the zirconia provisional crown and surgical guide template before surgery. The implant was accurately placed with the surgical guide, and the zirconia provisional crown was immediately delivered after surgery. Three months later, the implant osseointegration was completed, and zirconia provisional crown was prepared intraorally to generate customized zirconia abutment for final prosthesis. The study included 30 patients with single anterior tooth loss, including 18 males and 12 females, aged from 26 to 50 years old, and the mean age was (36.2±6.1) years old. The patients were from the Center of Oral Implantology, The First Affiliated Hospital of Zhejiang University Medical College from January 2017 to February 2018. After cementation of the final prosthesis, the cases were followed up at 6 and 12 months time intervals. Implant survival rate, probing depth, bleeding on probing, marginal bone level loss and papilla index score (PIS) were recorded in every appointment. Results: The survival rate of 30 implants was 100%, and the probing depths were less than 5 mm. The bone resorption at 6 and 12 months follow-up after the final delivery was 0 (0, 0) mm and 0 (-0.2, 0) mm, respectively, and the difference was not statistically significant (P>0.05). The PIS was 3.0 (2.0, 4.0), 3.0 (2.8, 4.0) and 3.0 (3.0, 4.0) on the final delivery, 6 and 12 months after final delivery, respectively. Conclusions: Marginal bone level and bone loss were stable with this new implant clinical protocol at the one-year follow-up.


Asunto(s)
Implantes Dentales de Diente Único , Implantes Dentales , Adulto , Coronas , Prótesis Dental de Soporte Implantado , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Resultado del Tratamiento , Circonio
14.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 55(11): 891-896, 2020 Nov 09.
Artículo en Chino | MEDLINE | ID: mdl-33171564

RESUMEN

Objective: To evaluate the clinical outcomes of digital technique-aided occlusal rehabilitation based on implant-supported fixed prostheses (ISFP), and to provide some information for clinical application of digital technique. Methods: Retrospectively reviewed the cases which had used neuromuscular system and condylar movement tracing device to reconstruct occlusion in one or double jaw fully edentulous ISFP from January, 2013 to January, 2020. A total of 6 eligible patients were enrolled in the present study with 56 implants and 8 ISFP, including 4 male patients and 2 female patients, aged from 43 to 74 years. The clinical outcomes were evaluated in four aspects, including implant survival rate, implants success rate, marginal bone loss and the occurrence of prosthesis complications. Results: The follow-up time was (4.0±2.2) years (1-7 years). The implant survival rate was 100% (56/56) and the implant success rate was 98% (55/56), with an average missal and distal marginal bone loss of (0.04±0.11) mm/year. Veneer chipping occurred at incisal edge of 2 adjacent incisors in only one prosthesis 3 years after rehabilitation. Conclusions: Combination of digital techniques of neuromuscular system and condylar movement tracing device to assist occlusal rehabilitation based on ISFP showed a high implant success rate. The complication seldom happened. Long and stable occlusion has been observed. The clinical outcomes were favorable.


Asunto(s)
Implantes Dentales , Arcada Edéntula , Boca Edéntula , Adulto , Anciano , Implantación Dental Endoósea , Diseño de Prótesis Dental , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental , Femenino , Estudios de Seguimiento , Humanos , Arcada Edéntula/cirugía , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
15.
Artículo en Inglés | MEDLINE | ID: mdl-33151192

RESUMEN

Oral cancer treatment involving the maxilla and/or mandible often results in esthetic and functional deficits that can diminish the patient's quality of life. As a result, expeditious reconstruction of the defect and dental rehabilitation is desirable. Dental rehabilitation shortly after reconstruction with an osteocutaneous free flap and resection prosthesis is a persistent challenge for patients with oncologic defects where immediate dental rehabilitation is not a possibility. Additionally, conventional prosthesis fabrication techniques are impractical or impossible due to postoperative anatomical changes and limitations in clinical armamentarium. To address these limitations, a technique and a novel implant-supported prosthetic workflow for the oncologic patient were developed to provide interim dental rehabilitation for such clinical situations. This article describes the prosthesis fabrication technique, reports short-term outcomes, and evaluates patient-reported quality-of-life outcomes using the FACE-Q Head and Neck Cancer Module.


Asunto(s)
Implantes Dentales , Colgajos Tisulares Libres , Reconstrucción Mandibular , Implantación Dental Endoósea , Prótesis Dental de Soporte Implantado , Peroné/cirugía , Humanos , Calidad de Vida
16.
Int J Periodontics Restorative Dent ; 40(6): e235-e240, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33151196

RESUMEN

This case report describes the rehabilitation of an extremely atrophic posterior mandible using 4-mm ultrashort implants and reports clinical and radiographic outcomes 7 years after loading. The patient refused to undergo any other treatment, from the removable prosthesis to the reconstructive surgery, and asked for a fixed, minimally invasive solution in the shortest possible time. The residual bone height above the alveolar nerve was an average of about 5 mm, so it was decided to treat the patient with four 4-mm ultrashort implants. Within the limitations of this case report, this procedure appears successful at 7 years after loading in this specific case and could reduce invasiveness, rehabilitative times, and costs. However, longer follow-ups on a large number of patients coming from randomized controlled clinical trials are necessary before making more reliable recommendations.


Asunto(s)
Pérdida de Hueso Alveolar , Aumento de la Cresta Alveolar , Implantes Dentales , Pérdida de Hueso Alveolar/cirugía , Implantación Dental Endoósea , Diseño de Prótesis Dental , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental , Estudios de Seguimiento , Humanos , Mandíbula/diagnóstico por imagen , Mandíbula/cirugía , Resultado del Tratamiento
17.
Stomatologiia (Mosk) ; 99(5): 87-91, 2020.
Artículo en Ruso | MEDLINE | ID: mdl-33034183

RESUMEN

The paper presents a clinical case demonstrating the necessity for scarce dental implants surgery in tissues affected by multiply surgical and radiological procedures. The patient underwent 13 interventions, 4 reconstructive procedures and 3 courses of radiotherapy resulting in extensive facial defect. An orthopedic construction was fixed in a defect on mechanically stable single-stage implants with screw-retained orthopedic platform and trans-zygomatic implants on the contralateral side. The method is based on virtual diagnostics and choice of materials for 3D-prototyping of a framework to fill the defect and serve as supportive element for fixation and stabilization of obturator and facial mask.


Asunto(s)
Implantes Dentales , Procedimientos Quirúrgicos Reconstructivos , Prótesis Dental de Soporte Implantado , Humanos
18.
J Am Dent Assoc ; 151(11): 863-869, 2020 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-33121608

RESUMEN

BACKGROUND AND OVERVIEW: Patients seropositive HIV and AIDS represent a group of patients who experience longer longevity at the expense of effective therapies for infection control and related opportunistic diseases. However, the prolonged use of these drugs is often associated with adverse events, which theoretically may influence dental management and the long-term stability of dental implants. The objective of this study was to prospectively evaluate a group of HIV-positive people from a previous study who had received dental implants for 12 years after oral rehabilitation and functional loading. CASE DESCRIPTION: Nine patients with a total of 18 implants participated in this study. Viral load was undetectable in 8 patients, with 1 who had 48 copies/milliliter. The cluster of differentiation 4 T lymphocyte count ranged from 227 through 1,000 cells/cubic millimeter, mean (standard deviation [SD]) 564 (271.13) cells/mm3. Five of the 9 (55.5%) patients had visible plaque, and 5 (55.5%) had bleeding on probing with no implant mobility. Radiographs obtained at 6 months, 12 months, and 12 years of functional loading showed mean (SD) marginal bone losses of 0.32 (0.23) mm, 0.37 (0.23) mm, and 2.43 (1.48), respectively. CONCLUSION AND PRACTICAL IMPLICATIONS: These results suggest that dental implant treatment in HIV-positive patients achieved long-term survival, with a success rate comparable with that observed in healthy patients, indicating that implant rehabilitation is not a contraindication for HIV-positive patients.


Asunto(s)
Pérdida de Hueso Alveolar , Implantes Dentales , Infecciones por VIH , Implantación Dental Endoósea , Diseño de Prótesis Dental , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental , Estudios de Seguimiento , Infecciones por VIH/complicaciones , Infecciones por VIH/tratamiento farmacológico , Humanos , Resultado del Tratamiento
19.
Med Oral Patol Oral Cir Bucal ; 25(6): e784-e790, 2020 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-33037809

RESUMEN

BACKGROUND: This study investigated the causes of dental implant removal due to complications, and examined whether patients who had dental implant removal desired re-implant prosthesis treatments. MATERIAL AND METHODS: A retrospective case-control study was conducted on patients who had their dental implants removed. We investigated whether the removed dental implant was replaced with other implant prostheses. Age, sex, diabetes, smoking, implant site distribution, reason for implant removal, and blade and root-form implants were categorized as predictive variables. The outcome variable was desire for re-implantation or use of other prosthetic methods after implant removal. A logistic regression model was created to identify patient factors that could predict the re-implantation of dental prostheses after implant removal. RESULTS: A total of 215 dental implants were removed from 143 patients. The most common reason for implant removal was peri-implantitis that was identified in 165 implants. After implant removal, re-implantation was performed in 98 implants (45.6%). Bivariate analyses showed that age, diabetes, implant type, and reason for implant removal were associated with the desire for re-implanted prostheses. The multiple regression model revealed that age, implant type, and reason for implant removal were associated with an increased desire for re-implant prostheses after implant removal. CONCLUSIONS: Re-implantation of prostheses after the removal of dental implants was desired by patients who were younger, had implants placed in the root form, and had implants removed due to prosthetic-related complications.


Asunto(s)
Implantes Dentales , Estudios de Casos y Controles , Implantación Dental Endoósea , Diseño de Prótesis Dental , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental , Estudios de Seguimiento , Humanos , Estudios Retrospectivos
20.
Compend Contin Educ Dent ; 41(9): e5-e9, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-33001661

RESUMEN

This article describes the case of a partially edentulous patient who had undergone template-guided implant placement and was treated using a triple digital scanning protocol that allowed for CAD/CAM prosthodontic rehabilitation in a complete digital workflow. At the impression appointment, the provisional implant-supported screw-retained prosthesis was digitally scanned both intraorally (first scan) and, after removal, extraorally (second scan). After the second scan, scan bodies were placed intraorally and an implant-level digital impression was taken (third scan). The three standard tessellation language (STL) files derived from the three digital scans were imported in a CAD software and superimposed into one file that contained all of the information from the implant 3D position, prosthesis contours, and transmucosal part of the peri-implant soft tissues. The superimposition of the three STL files led to one master file to serve as a blueprint for the definitive prosthesis. The definitive monolithic zirconia prosthesis was CAM copy-milled, externally stained, and inserted. The patient was satisfied with both the esthetic and functional outcome and the minimally invasive, time-efficient, two-visit restorative protocol. In summary, this case report illustrates a technique for a complete digital workflow in an implant rehabilitation for the replacement of multiple missing teeth in the esthetic zone in two visits.


Asunto(s)
Implantes Dentales , Flujo de Trabajo , Diseño Asistido por Computadora , Prótesis Dental de Soporte Implantado , Estética Dental , Humanos
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