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1.
Int J Prosthodont ; 2021 Feb 26.
Artículo en Inglés | MEDLINE | ID: mdl-33651036

RESUMEN

PURPOSE: To evaluate the occlusal reproductive trueness of zirconia crowns fabricated using additive manufacturing (AM) and to compare the surface roughness of crowns fabricated using AM and conventional milling (CM). MATERIALS AND METHODS: Crowns were manufactured using AM and CM on abutments with total occlusal convergence angles of 16 and 20 degrees. RESULTS: The surface roughness of the AM crowns was less than that of the CM crowns. The differences in reproduction of the occlusal morphology of the abutment crown were greater at 16 degrees than at 20 degrees. CONCLUSION: AM could be an effective method for manufacturing zirconia crowns.

2.
Jpn Dent Sci Rev ; 56(1): 184-189, 2020 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-33299502

RESUMEN

The purpose of the present review was to survey the available literature on computer-aided design/computer-aided manufacturing (CAD/CAM)-produced resin composite materials to provide clinicians with a current overview of the key components necessary for daily clinical use. An electronic search was conducted in the PubMed database. Peer-reviewed articles in English language on the use of resin composites in CAD/CAM dental crowns were included. A total of 122 full-text articles were identified, 15 of which were selected during the initial review. Two additional articles were also discovered through a manual search, to obtain a final total of 17 articles included in the present review. Of these, 16 were to in vitro studies, and one was an in vivo study. Findings from the in vitro studies indicate that resin composite block materials for CAD/CAM applications demonstrate excellent physical properties and are appropriate for the clinical restoration of premolars and molars. However, the in vivo study reported a low 3-year success rate, but high survival rate for resin composite CAD/CAM crowns placed in the premolar region. The key to ensuring the successful prognosis of a resin composite CAD/CAM crown is to ensure that all steps-such as proper case selection, abutment tooth preparation, occlusal adjustment, and bonding-are accurately performed.

3.
J Prosthodont Res ; 2020 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-32938882

RESUMEN

PURPOSE: The primary purpose of this study was to examine the clinical performance of monolithic zirconia single crowns in terms of short-term failure or complications. The secondary purpose was to detect the originating flaws of clinically failed monolithic zirconia crowns to find the causes of failure. METHODS: A short-term prospective cohort study based on record evaluation and clinical examination of patients treated with tooth-supported monolithic zirconia crowns was performed in the Department of Fixed Prosthodontics, Tohoku University Hospital, Japan. The crowns were prepared during the follow-up period from April 2014 to July 2018. The 3.5-year cumulative success and survival rates were set as primary endpoints. Fractures of the crown or fragments were inspected under a scanning electron microscope for descriptive fractography. RESULTS: During the study period, 40 monolithic zirconia crowns were placed. Four crowns experienced clinical complications, including: 1) fracture of the crown (two crowns), 2) abrasion of the crown (one crown), and 3) fracture of the antagonist tooth (one crown). The estimated Kaplan-Meier 3.5-year success and survival rates were 90.5% (95% confi dence interval [CI]: 73.1-97.1) and 92.8% (95% CI: 74.1-98.3), respectively. Fractography revealed that all fractures were initiated from the wear phase on the occlusal surface. CONCLUSIONS: The results of this study suggest that the molar application of monolithic zirconia crowns requires detailed attention to interocclusal clearance and the restoration of the antagonist tooth.

4.
J Oral Sci ; 62(4): 353-355, 2020 Sep 26.
Artículo en Inglés | MEDLINE | ID: mdl-32741852

RESUMEN

Computer-aided design/computer-aided manufacturing (CAD/CAM) restorative materials have been widely used owing to a number of advantages, including stable quality of the materials, lower costs, and time-saving factors. Resin-based CAD/CAM materials for definitive restorations are classified into two groups: dispersed nanoparticle-filled composite resin and polymer-infiltrated-ceramic-network materials. Resin-based CAD/CAM materials have been applied to single crown restorations as a monolithic structure for the posterior region. In addition, resin-based CAD/CAM restorations have been applied recently for the anterior area. This literature review summarizes clinical outcomes, such as survival rates and clinical complications of single crown restorations fabricated with resin-based CAD/CAM materials.


Asunto(s)
Diseño Asistido por Computadora , Coronas , Cerámica , Resinas Compuestas , Materiales Dentales , Porcelana Dental , Diseño de Prótesis Dental , Ensayo de Materiales
5.
J Oral Rehabil ; 47(7): 827-833, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32329089

RESUMEN

BACKGROUND: Electromyography (EMG) biofeedback (BF) training is potentially an effective cognitive-behavioural approach to regulate bruxism. OBJECTIVE: This study examined sleep bruxism regulation by daytime clenching control using a single-channel auditory EMG BF device. METHODS: Seventeen male subjects (mean age, 24.4 ± 3.1 years; mean ± SD) with self-reported awake/sleep bruxism were recruited and divided into a BF (n = 10) and a control (CO) group (n = 7). All subjects underwent four EMG recording sessions during both daytime and sleep over 3 weeks. During the daytime, in week 2, the BF group received feedback alert signals when excessive EMG activity with certain burst duration was detected while the subjects performed regular daily activities. The CO group underwent EMG recording sessions without receiving any alerts of parafunctional activity. The number of phasic burst events during sleep was compared between the BF and CO groups. RESULTS: While the number of phasic EMG events was not significantly different between the BF and CO groups at baseline, significantly smaller phasic events were observed in the BF compared to the CO group at the follow-up session (week 3) (P = .006, Tukey's HSD). Since daytime BF training is aimed at raising awareness of awake bruxism, it does not interrupt the sleep sequence or involve associated side effects. CONCLUSION: The present results suggest that EMG BF targeting for tonic EMG events during the daytime can be an effective method to regulate phasic EMG events during sleep.


Asunto(s)
Bruxismo , Bruxismo del Sueño , Adulto , Biorretroalimentación Psicológica , Electromiografía , Humanos , Masculino , Músculos Masticadores , Sueño , Adulto Joven
6.
Geriatr Gerontol Int ; 20(6): 607-614, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32227400

RESUMEN

AIM: Previous studies on the association between intraoral conditions and mortality in community-dwelling older individuals reported that fewer present teeth (PT) are significant risk factors for mortality. However, how the number of PT relative to the number of functional teeth (FT), including both present and rehabilitated teeth, influences mortality has not been investigated fully. This study examined the impact of the number of FT on mortality among community-dwelling Japanese older adults. METHODS: This study was a retrospective, observational and population-based follow-up study, which examined 1188 older individuals who participated in an annual geriatric health examination from 2009 to 2015. The average follow-up period was 1697.0 ± 774.5 days. The primary outcome was all-cause mortality at follow-up. The numbers of PT and FT of each participant were counted during an oral examination. In addition, demographics, clinical variables, blood nutrient markers, physical functions and perceived masticatory function were measured. RESULTS: Kaplan-Meier analysis, followed by a log-rank test, revealed that fewer PT (P < 0.001) and FT (P = 0.002) were significantly associated with a reduced survival rate. Cox's proportional hazard analysis indicated that the number of FT, but not the number of PT, was a significant independent mortality risk factor after adjusting for demographics, clinical variables, nutrient markers and physical functioning (P = 0.036, hazard ratio: 2.089). CONCLUSIONS: Current results suggest that the number of FT more strongly predicts all-cause mortality than the number of PT among community-dwelling older adults. Further studies are necessary to consider the confounding of socioeconomic status and disability status. Geriatr Gerontol Int 2020; ••: ••-••.


Asunto(s)
Pérdida de Diente/mortalidad , Anciano , Anciano de 80 o más Años , Diagnóstico Bucal , Femenino , Estudios de Seguimiento , Evaluación Geriátrica , Humanos , Vida Independiente , Japón , Estimación de Kaplan-Meier , Masculino , Modelos de Riesgos Proporcionales , Estudios Retrospectivos , Factores de Riesgo
7.
J Oral Sci ; 61(2): 195-199, 2019 Jun 18.
Artículo en Inglés | MEDLINE | ID: mdl-31118360

RESUMEN

Interim restoration protects abutment teeth and periodontal tissues until prosthetic treatment ends with the fabrication of a definitive prosthesis, restores and maintains the functions and morphology of the stomatognathic system, and preserves the occlusal contact relationship. Temporary prostheses are used for a short time, to confirm the diagnosis and treatment plan. However, because interim restorations are used only briefly, their importance in ensuring the success of definitive prostheses is often overlooked. This review includes a comprehensive literature review of interim restoration of molars and summarizes the current clinical understanding and status of this functionally important area. Peer-reviewed publications were identified by searching PubMed in November 2018. An interim restoration, even when used briefly, can help dentists evaluate many aspects of the treatment plan and contribute to accurate prognosis of prosthetic treatment.


Asunto(s)
Restauración Dental Provisional , Diente Molar
8.
J Prosthodont Res ; 63(2): 227-231, 2019 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-30651211

RESUMEN

PURPOSE: Clinical failures of teeth restored with post-and-core are critical issues for the survival of teeth and maintenance of oral functions. A tooth with post-and-core restoration is a complex structure. Cement adhesion is believed to be the weakest component, and breakage in this component leads to changes in stress distribution in the complex structure. The tested hypothesis was that cement breaking processes of prosthetic treated teeth were affected by elastic properties of post-and-cores. METHODS: Finite element analysis focused on sequential adhesion failure between the dentin and cement; the penalty function method was used to analyze stress during each stage of bonding conditions. Failure patterns of adhesion and stress distribution within dentin under load of different materials of post-and-core was observed. RESULTS: Although, an initial failure of cement was observed at the palatal crown margin regardless of the material. Different patterns of adhesion failure between dentin and post-and-cores were observed by different elastic properties of post-and-cores. Stress concentration was observed at the corresponding areas of interface between adhesion failure and continued elements using both post-and-cores. CONCLUSIONS: Using failure criteria for cement adhesion, sequential changes of adhesion failure between dentin and post-and-cores were observed. Local stress concentrations leading to severe destruction of dentin were caused by not only materials of post-and-cores but their adhesive conditions to dentin. Nonlinear finite element analysis (FEA) using complex structure model which deals with alterations of interfacial condition between components could provide the simulation for the clinical failure of teeth restored with post-and-cores.


Asunto(s)
Recubrimiento Dental Adhesivo , Cementos Dentales , Dentina , Módulo de Elasticidad , Técnica de Perno Muñón , Coronas , Modelos Dentales , Análisis del Estrés Dental/métodos , Análisis de Elementos Finitos , Humanos , Incisivo , Maxilar , Estrés Mecánico , Resistencia a la Tracción , Diente no Vital
9.
J Prosthodont Res ; 62(2): 162-170, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-28916466

RESUMEN

PURPOSE: The Japan Prosthodontic Society developed a multi-axis assessment protocol to evaluate the complex variations in patients who need prosthodontic care, and to classify the level of treatment difficulty. A previous report found the protocol to be sufficiently reliable. The purpose of this multi-center cohort study was to evaluate the validity of this multi-axis assessment protocol. METHODS: The treatment difficulty was evaluated using the multi-axis assessment protocol before starting prosthodontic treatment. The time required for active prosthodontic treatment, medical resources such as treatment cost, and changes in the oral health-related QOL before and after treatment, were evaluated after treatment completion. The construct validity of this protocol was assessed by the correlation between the dentist's pre-operative subjective assessment of the treatment difficulty, and the level of difficulty determined by this protocol. The predictive validity was assessed estimating the correlations between a "comprehensive level of treatment difficulty" based on the four axes of this protocol and total treatment cost, total treatment time, and changes in the oral health-related QOL before and after treatment. RESULTS: The construct validity of this protocol was well documented except for psychological assessment. Regarding the predictive validity, the comprehensive level of treatment difficulty assessed before treatment was significantly correlated with the three surrogate endpoints known to be related to the treatment difficulty (total treatment cost, treatment time, and improvement in the oral health-related QOL). To further clarify the validity of the protocol according to patients' oral condition, a subgroup analysis by defects was performed. Analyses revealed that treatment difficulty assessment before treatment was significantly related to one or two surrogate endpoints in the fully edentulous patients and the partially edentulous patients. No significant relationship was observed in the patients with mixture of full/partial edentulism and the patients with teeth problems, possibly due to the small sample size in these groups. CONCLUSION: This study revealed that the multi-axis assessment protocol was sufficiently valid to predict the level of treatment difficulty in prosthodontic care in patients with fully edentulous defects and with partially edentulous defects.


Asunto(s)
Boca Edéntula/rehabilitación , Evaluación de Procesos, Atención de Salud/métodos , Prostodoncia , Sociedades Odontológicas/organización & administración , Estudios de Cohortes , Predicción , Humanos , Japón , Boca Edéntula/psicología , Salud Bucal , Prostodoncia/economía , Prostodoncia/métodos , Prostodoncia/organización & administración , Calidad de Vida , Factores de Tiempo
10.
J Prosthodont Res ; 61(1): 20-33, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-27514568

RESUMEN

PURPOSE: The Japan Prosthodontic Society (JPS) has proposed a new diagnostic nomenclature system (DNS), based on pathogenesis and etiology, to facilitate and improve prosthodontic treatment. This system specifies patient disability and the causative factor (i.e. "B (disability) caused by A (causative factor)"). The purpose of this study was to examine the reliability and validity of this DNS. STUDY SELECTION: The JPS Clinical Guideline Committee assessed mock patient charts and formulated disease names using the new DNS. Fifty validators, comprising prosthodontic specialists and dental residents, made diagnoses using the same patient charts. Reliability was evaluated as the consistency of the disease names among the validators, and validity was evaluated using the concordance rate of the disease names with the reference disease names. RESULTS: Krippendorff's α was 0.378 among all validators, 0.370 among prosthodontic specialists, and 0.401 among dental hospital residents. Krippendorff's α for 10 validators (3 specialists and 7 residents) with higher concordance rates was 0.524. Two validators (1 specialist and 1 resident) with the highest concordance rates had a Krippendorff's α of 0.648. Common disease names had higher concordance rates, while uncommon disease names showed lower concordance rates. These rates did not show correlation with clinical experience of the validator or time taken to devise the disease name. CONCLUSIONS: High reliability was not found among all validators; however, validators with higher concordance rates showed better reliability. Furthermore, common disease names had higher concordance rates. These findings indicate that the new DNS for prosthodontic dentistry exhibits clinically acceptable reliability and validity.


Asunto(s)
Diagnóstico Bucal/métodos , Prostodoncia/métodos , Humanos , Japón , Reproducibilidad de los Resultados
11.
J Prosthodont Res ; 60(3): 156-66, 2016 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-26868189

RESUMEN

PURPOSE: Dentists may encounter patients who present with a sense of a malocclusion but in whom no objective findings can be detected. For the patient who insists that there is occlusal discomfort, in the absence of evidence some dentists elect to perform an occlusal adjustment that not only fails to alleviate symptoms, and may, in fact, exacerbate the discomfort. The patient-dentist relationship is then likely compromised because of a lack of trust. STUDY SELECTION: In 2011, the Clinical Practice Guidelines Committee of the Japan Prosthodontic Society formulated guidelines for the management of occlusal discomfort. When formulating clinical practice guidelines, the committee bases their recommendations on information derived from scientific evidence. For "occlusal dysesthesia," however, there are an insufficient number of high-quality papers related to the subject. Therefore, a consensus meeting was convened by the Japan Prosthodontic Society to examine evidence in the Japanese- and English-language literature and generate a multi-center survey to create an appropriate appellation for this condition. RESULTS: As a result of the consensus meeting and survey findings, this condition may be justifiably termed "occlusal discomfort syndrome." CONCLUSIONS: The Japan Prosthodontics Society believes that identification of an umbrella term for occlusal discomfort might serve as a useful guide to formulating clinical practice guidelines in the future. This position paper represents summary findings in the literature combined with the results of a multicenter survey focused on dental occlusal treatment and the condition of patients who present with occlusal discomfort syndrome.


Asunto(s)
Maloclusión/psicología , Maloclusión/terapia , Ajuste Oclusal/efectos adversos , Guías de Práctica Clínica como Asunto , Prostodoncia/organización & administración , Sensación , Adulto , Anciano , Progresión de la Enfermedad , Femenino , Humanos , Japón , Masculino , Persona de Mediana Edad , Síndrome
12.
J Prosthodont Res ; 58(2): 71-84, 2014 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-24746524

RESUMEN

This position paper reviews physical and mechanical properties of thermoplastic resin used for non-metal clasp dentures, and describes feature of each thermoplastic resin in clinical application of non-metal clasp dentures and complications based on clinical experience of expert panels. Since products of thermoplastic resin have great variability in physical and mechanical properties, clinicians should utilize them with careful consideration of the specific properties of each product. In general, thermoplastic resin has lower color-stability and higher risk for fracture than polymethyl methacrylate. Additionally, the surface of thermoplastic resin becomes roughened more easily than polymethyl methacrylate. Studies related to material properties of thermoplastic resin, treatment efficacy and follow-up are insufficient to provide definitive conclusions at this time. Therefore, this position paper should be revised based on future studies and a clinical guideline should be provided.


Asunto(s)
Materiales Dentales , Dentadura Parcial Removible , Resinas Sintéticas , Resinas Acrílicas , Humanos , Fenómenos Mecánicos , Metales , Nylons , Fenómenos Físicos , Cemento de Policarboxilato , Poliésteres , Polímeros , Polimetil Metacrilato , Polipropilenos , Sulfonas
13.
J Prosthodont Res ; 58(1): 3-10, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-24461323

RESUMEN

This position paper proposes a definition and naming standard for removable partial dentures (RPDs) using thermoplastic resin, and presents a guideline for clinical application. A panel of 14 experts having broad experience with clinical application of RPDs using thermoplastic resin was selected from members of the Japan Prosthodontic Society. At a meeting of the panel, "non-metal clasp denture" was referred as the generic name of RPDs with retentive elements (resin clasps) made of thermoplastic resin. The panel classified non-metal clasp dentures into two types: one with a flexible structure that lacks a metal framework and the other having a rigid structure that includes a metal framework. According to current prosthetic principles, flexible non-metal clasp dentures are not recommended as definitive dentures, except for limited cases such as patients with a metal allergy. Rigid non-metal clasp dentures are recommended in cases where patients will not accept metal clasps for esthetic reasons. Non-metal clasp dentures should follow the same design principles as conventional RPDs using metal clasps.


Asunto(s)
Abrazadera Dental , Diseño de Dentadura , Dentadura Parcial Removible , Resinas Sintéticas , Contraindicaciones , Retención de Dentadura , Humanos , Metales/efectos adversos
14.
J Prosthodont Res ; 55(2): 75-81, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-21130060

RESUMEN

PURPOSE: Although daytime clenching is believed to be one of the oral parafunctions leading to dental problems, a treatment strategy has not yet been devised. Electromyogram (EMG) biofeedback training was performed to ascertain its effect on the regulation of daytime clenching behavior. MATERIALS AND METHODS: Twenty subjects (mean age, 30.9±5.6 years) who had mild to moderate masticatory muscle pain with daytime clenching behavior were randomly divided into either a biofeedback group (BF) or control group (CO). Subjects were fitted with a hearing-aid-shaped EMG recording and biofeedback apparatus which was used to record EMG data under natural conditions from the temporal muscle, continuously for five hours on four consecutive days. EMG data on Days 1 and 4 were recorded without biofeedback as pre-test and post-test, respectively, and on Days 2 and 3, subjects in the BF group noticed their clenching behaviors via an alert sound from the EMG biofeedback apparatus. No alert sound was given for the CO group throughout the recording sessions. RESULTS: There was no significant difference in the number of clenching events for five hours between the BF group (4.6±2.5) and CO group (4.6±0.9) on Day 1, however a significant decrease was found in the BF group between Day 1 (4.6±2.5) and Day 4 (2.4±1.7; P<0.05). CONCLUSION: Daytime clenching was reduced in the short-term with the help of an EMG biofeedback system under natural circumstances. Further research is needed to confirm a long-lasting effect.


Asunto(s)
Bruxismo/terapia , Neurorretroalimentación , Adulto , Femenino , Humanos , Masculino , Músculos Masticadores , Dolor
15.
J Prosthodont Res ; 54(2): 55-8, 2010 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-20138818

RESUMEN

This article reviews the findings of 5 original papers in the areas of jaw function published in the Journal of the Japan Prosthodontic Society (J Japan Prosthodontic Soc; Nippon Hotetsu Shika Gakkai Zasshi in Medline/PubMed; issued in Volume 52, 2008). A variety of subjects in relation to body movement associated with mandibular movement, parameters for mandibular movement analysis, system evaluation for a new jaw tracking device and obstructive sleep apnea were examined in the listed articles.


Asunto(s)
Oclusión Dental , Maxilares/fisiología , Humanos
16.
Dent Mater J ; 27(1): 49-55, 2008 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-18309611

RESUMEN

Using three-dimensional finite element analysis (3D-FEA), stress distributions in the remaining radicular tooth structure were investigated under the condition of varying diameters of fiber post for fiber post-reinforced composite resin cores (fiber post and core) in maxillary central incisors. Four 3D-FEA models were constructed: (1) fiber post (ø1.2, ø1.4, and ø1.6 mm) and composite resin core; and (2) gold-cast post and core. Maximum stresses in the tooth structure for fiber post and core were higher than that for gold-cast post and core. In the former models, stresses in the tooth structure as well as in the composite resin were slightly reduced with increase in fiber post diameter. These results thus suggested that to reduce stress in the remaining radicular tooth with a large coronal defect, it is recommended to accompany a composite resin core with a fiber post of a large diameter.


Asunto(s)
Resinas Compuestas/química , Diseño de Prótesis Dental , Análisis de Elementos Finitos , Imagenología Tridimensional/métodos , Técnica de Perno Muñón , Coronas , Recubrimiento Dental Adhesivo , Porcelana Dental/química , Fracaso de la Restauración Dental , Dentina/fisiología , Aleaciones de Oro/química , Humanos , Incisivo/fisiología , Aleaciones de Cerámica y Metal/química , Modelos Biológicos , Técnica de Perno Muñón/instrumentación , Cementos de Resina/química , Resistencia al Corte , Estrés Mecánico , Raíz del Diente/fisiología
17.
Nihon Hotetsu Shika Gakkai Zasshi ; 49(4): 593-8, 2005 Aug.
Artículo en Japonés | MEDLINE | ID: mdl-16121022

RESUMEN

PATIENT: A case report of a 39-year-old man complaining of complex dysfunction of occlusion and mastication is presented. The patient came to Iwate Medical University Hospital following urgent hospitalization and treatment at a local hospital after catching his head in a forklift. The patient consulted the Second Prosthetic Department with the purpose of occlusal examination in April, 1994 and he was diagnosed with a malunited maxillary fracture. Afterwards, surgical correction was performed, but complex dysfunction of occlusion and mastication remained. Fixed prosthesis treatment was then planned and a dental prosthesis was set in April, 2000. His prognosis has since remained favorable. DISCUSSION: At the commencement of treatment, both surgery and orthodontic treatment were considered, but the patient desired early social rehabilitation. Therefore, a dental prosthesis was used to restore facial asymmetry and mandibular function. CONCLUSIONS: Rehabilitation of occlusal function was achieved by using a dental prosthesis. This facilitated early social rehabilitation and helped improve the patient's quality of life. Since there have been few reports of cases in which a dental prosthesis was used to correct occlusal disharmony after surgical correction due to maxillary fracture, long-term follow-up will be needed for this patient in order to increase knowledge about treatment strategies for such cases.


Asunto(s)
Maloclusión/etiología , Masticación/fisiología , Fracturas Maxilares/complicaciones , Adulto , Prótesis Dental , Fracturas Mal Unidas/complicaciones , Fracturas Mal Unidas/terapia , Humanos , Masculino , Maloclusión/terapia , Fracturas Maxilares/terapia
18.
J Prosthet Dent ; 91(4): 392-4, 2004 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-15116044

RESUMEN

An indirect technique for fitting a new cast gold crown or fixed partial denture (FPD) to an existing removable partial denture (RPD) is presented. This method uses an acrylic resin coping made on a definitive cast fit directly to the patient's RPD intraorally, with the new FPD subsequently completed on the cast. The patient does not have to relinquish the RPD for laboratory procedures, although an appointment is required to fit the coping intraorally where contact is made with the RPD.


Asunto(s)
Coronas , Diseño de Prótesis Dental , Dentadura Parcial Fija , Dentadura Parcial Removible , Dentadura Parcial Provisoria , Sistemas de Atención de Punto
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