Mandibular Removable Partial Dentures Research Articles

Longevity of acrylic and cobalt-chromium removable partial dentures–A ten-year retrospective survival analysis of 1246 denture-wearing patients

Objectivesto assess the survival rates of removable partial dentures (RPDs) and identify factors impacting their longevity. Methodselectronic health records were retrieved of patients aged ≥18 who received RPDs between 2010 – 2021 with a follow-up of ≥ three months. Data extracted included demographics, medical history, dental charting, periodontal screening and recording scores, prostheses details and related interventions, including new dentures/denture remakes, and maintenance. Multivariate Mixed-Effect Cox regression was performed to identify potential RPD survival risk factors. Reduced model selection was reached using a backward step-down by comparing the performance of these multivariable models using the ANOVA test. Results1893 RPDs from 1246 patients were included, with a median follow-up of 21.8 months (range from 3 to 131.3 months). Three hundred and twelve patients received a maxillary RPD, 460 received a mandibular RPD, and the remaining 474 patients received both maxillary and mandibular RPDs. Metal-based RPDs had a median survival of 73 months (95%CI: 70 – 82) versus 45 months (95% CI: 37-67) for acrylic ones. Multivariable mixed effects Cox model showed that the lifespans of RPDs were longer amongst patients receiving more maintenance care within three months [Hazards Ratio (HR)=0.89 (0.83, 0.96)] and after three months [HR=0.53 (0.46, 0.61)] of denture delivery, patients wearing both maxillary and mandibular RPDs [HR=0.67 (0.52, 0.87)], and patients receiving metal-based RPDs [HR=0.31 (0.23, 0.42)]. ConclusionsMetal-based dentures, dual arch restoration, and increased maintenance positively impact the survival of RPDs. Clinical significanceAdapting consent and warranty practices is advised to reflect RPD performance variations.

Accuracy of Mandibular Removable Partial Denture Frameworks Fabricated by 3D Printing and Conventional Techniques.

Herein, we used digital superimposition to evaluate the accuracy of metal frameworks for mandibular removable partial dentures fabricated using three techniques. Thirty master casts of a mandibular dentiform were categorized into three groups (n = 10) based on the framework manufacturing method: selective laser melting-based metal three-dimensional (3D) printing (SLM), digital light projection-based resin 3D printing and subsequent casting (RPC), and conventional casting (CON). The master casts were scanned twice, initially after preparation and subsequently after attaching silicone using the frameworks. These scan files were digitally superimposed to measure the silicone thickness. Statistical analysis was conducted using SPSS Statistics (Version 23.0, IBM Corp., Somers, NY, USA). One-way ANOVA and a post hoc Tukey's multiple comparison tests were performed to determine differences among the three groups (α = 0.05). The RPC group exhibited significantly higher overall and mean internal discrepancies at rest and tissue stops than the SLM and CON groups, which exhibited statistically insignificant differences. Thus, SLM fabrication resulted in comparable accuracy to that achieved by CON, whereas sequentially performing resin 3D printing and casting induced inferior accuracy. However, all frameworks across the three groups were clinically acceptable.

Retention of different types of attachments used with unilateral implant retained mandibular removable partial dentures.

Retention of different types of attachments used with unilateral implant retained mandibular removable partial dentures.

Postinsertion adjustment appointments and their association with cast removable partial denture survival

Statement of problemSuccessful outcomes with cast removable partial dentures (RPDs) are dependent on adequate fabrication and adjustments at the delivery appointment. Evaluation of the number and frequency of postinsertion follow-up appointments helps determine whether the prosthesis continues to fit comfortably and whether function and esthetics continue to be satisfactory. Reports on the number of appointments and frequency and type of adjustments required for RPDs following insertion are sparse. PurposeThe purpose of this university-based population study was to determine the number of appointments and type of adjustments following RPD insertion and their association with patient demographics, type of RPD, and denture survival. Material and methodsThis retrospective clinical study examined the records of 257 patients at the University of Toronto, Faculty Dentistry, wearing 308 RPDs inserted between 2013 and 2014 with a 5-year follow-up. The outcome measures investigated included postinsertion appointments, type of adjustments, and denture survival. ResultsA total of 48.1% of the dentures (19.5% tissue supported; and 28.6% tooth supported) were maxillary, and 51.9% (34.7% tissue supported; and 17.2% tooth supported) mandibular. Most patients (68.9%) had 1 to 3 postinsertion appointments, with 78.6% having no major adjustments. Twenty-six dentures failed (failure rate 8.4%), with the failure-free time estimated at 4.58 years (95% confidence interval (CI) 4.42-4.73 years, Kaplan-Meier survival analysis). Failed dentures were significantly associated with more minor adjustments (Mean (M)=4.12, SD=3.90, Kruskal-Wallis (K-W) P=.027; OR=1.18; 95% CI 1.05-1.32, P=.006). More minor adjustments were needed for mandibular dentures (multivariable Poisson regression (MPR) P=.003) compared with maxillary dentures. More major adjustments were needed for maxillary dentures (MPR P=.030) compared with mandibular dentures. More minor and major adjustments were needed for dentures that were remade from within 5 years to beyond 10 years compared with first time denture wearers (MPR P<.001). Patients with musculoskeletal disorders required a significantly higher number of minor adjustments (M=3.67, MPR P<.001) and appointments (M=3.87, MPR P<.001) than those without these disorders. ConclusionsThe 5-year survival of RPDs following insertion was estimated at 91.6%. Most patients required 1 to 3 appointments after insertion. Mandibular RPDs required significantly more minor adjustments, and maxillary RPDs more major adjustments. More minor and major adjustments were needed for dentures that were remade at any time previously compared with first time denture wearers.

HIGH - GRADE OSTEOBLASTIC OSTEOSARCOMA OF THE MAXILLA: DIAGNOSIS, TREATMENT, AND BUCCOMAXILLOFACIAL REHABILITATION

Osteosarcoma is one of the most common malignant bone lesions; however, it comprises only 6%-8% of all osteosarcomas. It is a lesion commonly found between the third and fourth decade of life, in addition to having a similar proportion of appearing between the mandible and maxilla. This study aims to report the case of a 64-year-old Caucasian female patient, affected by a high-grade osteoblastic osteosarcoma. The patient presented an edema in the posterior region of the maxilla, paresthesia, and nasal obstruction. Panoramic radiography and CT scans, along with anatomopathological examination, were performed. Histopathologically, an intense volume of osteoid was found. Left radial maxillectomy was the chosen treatment. The patient was first rehabilitated with a provisional palatal obturator prosthesis in order to improve her nutritional status. Her rehabilitation was planned and accomplished with a mandibular removable partial denture and a maxillary removable partial obturator denture. Osteosarcoma is one of the most common malignant bone lesions; however, it comprises only 6%-8% of all osteosarcomas. It is a lesion commonly found between the third and fourth decade of life, in addition to having a similar proportion of appearing between the mandible and maxilla. This study aims to report the case of a 64-year-old Caucasian female patient, affected by a high-grade osteoblastic osteosarcoma. The patient presented an edema in the posterior region of the maxilla, paresthesia, and nasal obstruction. Panoramic radiography and CT scans, along with anatomopathological examination, were performed. Histopathologically, an intense volume of osteoid was found. Left radial maxillectomy was the chosen treatment. The patient was first rehabilitated with a provisional palatal obturator prosthesis in order to improve her nutritional status. Her rehabilitation was planned and accomplished with a mandibular removable partial denture and a maxillary removable partial obturator denture.

The impact of an additional implant under the saddle of removable partial dentures in Kennedy Class II edentulism on oral health-related quality of life and oral function: a case series report

BackgroundImplant-supported removable partial dentures (ISRPDs) provide effective prosthodontic treatment for partially edentulous patients. ISRPDs offer greater patient satisfaction and better oral function compared with removable partial dentures (RPDs) by enhancing denture stability and support. However, few clinical studies have focused on RPD design in patients with mandibular Kennedy Class II edentulism. The aim of this case reports was to investigate the oral function, oral health-related quality of life, and satisfaction of four patients with unilateral distal-extension mandibular RPDs with the same design which were replaced with ISRPDs. In addition, we investigated how each patient’s evaluation varied with the change from RPD to ISRPD.Case presentationFour patients had unilateral distal-extension mandibular edentulism and were missing the first and second molars and the first and second premolars. They received one implant (4.0 mm in diameter, 8.0 mm in length; IAT EXA PLUS Bone level; Nippon Piston Ring Co. Ltd, Saitama, Japan) at the position equivalent to the first molar in the edentulous residual ridge perpendicular to the occlusal plane. Implant position was determined by surgical guide plate. RPDs were fabricated after the residual mucosal membrane had healed. The basic design of the RPD was as follows: a cobalt–chromium alloy cast metal framework denture with a lingual bar as the major connector, a double Akers clasp on the molars and an auxiliary retainer on the premolar as indirect retainers, and a wrought wire clasp and a cast cingulum rest (combination clasp) as direct retainers. Masticatory performance, occlusal force, oral health-related quality of life, and satisfaction were estimated at baseline, and at time points after insertion of the RPD and after insertion of the adapted ISRPD. Each evaluation item showed a tendency for improvement on insertion of the new RPD. Masticatory performance and satisfaction tended to be better after insertion of the ISRPD than after insertion of the RPD.ConclusionOur findings suggest that ISRPDs provided better patient satisfaction and masticatory performance than RPDs in patients with mandibular Kennedy Class II edentulism.Trial registration UMIN Clinical Trials Registry and Japan Registry of Clinical Trials, UMIN000025283 and jRCTs012180003. Registered 19 February 2016 and 17 December 2018, https://www.umin.ac.jp/ and https://jrct.niph.go.jp/

Accuracy of Removable Partial Denture Frameworks Fabricated Using Conventional and Digital Technologies.

This study analyzed the fit accuracy of the removable partial denture (RPD) metal frameworks produced using digital and conventional manufacturing technologies. Mandibular RPD metal frameworks (N=15, n=3 per group) were fabricated on a representative clinical case. RPDs were fabricated using one of the following manufacturing procedures: a) conventional lost-wax casting technique (C-LW), b) conventional casting of milled sacrificial patterns (C-M), c) conventional casting of printed sacrificial patterns (C-P), d) selective laser melting (SLM), e) direct metal laser sintering (DMLS) technologies. The fit accuracy of RPD frameworks was analyzed by fabricating replicas with silicone registration material and measuring with a digital microscope. A total of 11 sites and 29 areas in the RPD metal frameworks were considered for the accuracy measurements (μm). Data were statistically analyzed using Wilcoxon signed rank and Friedman test (α=0.05). Before finishing and polishing, C-M method presented overall significantly better (P⟨.001) fit accuracy (118 μm) than those of other methods (195-265 μm). After finishing and polishing, C-M method showed overall significantly better (P⟨.033) fit accuracy (205.7 μm) than C-LW and SLM methods (285.7 μm; 249 μm) and comparable fit accuracy to that of C-P and DMLS methods. Accuracy at the minor and major connector areas of RPDs were affected from the manufacturing technologies. Clinical Implications: When accuracy of RPDs are considered, digital technologies tested presented similar results to those of conventional manufacturing method except for minor and major connector areas which necessitates further improvement.

GOHAI and OHIP-EDENT Evaluation in Removable Dental Prostheses Users: Factorial Analysis and Influence of Clinical and Prosthetic Variables.

To assess the degree of satisfaction and quality of life of patients with removable prostheses using the Geriatric Oral Health Assessment Index (GOHAI) and Oral Health Impact Profile in Edentulous Adults (OHIP-EDENT), in addition to evaluating the questionnaires for their validation. Eighty patients participated in the study after completing prosthetic rehabilitation treatment. Patients were evaluated using the OHIP-EDENT and GOHAI questionnaires to assess the criteria for quality of life, esthetics, phonetics, masticatory function, stability, comfort, and alteration of taste and pain related to the completed prostheses. The results were subjected to the chi-squared test, Fisher's exact test, and a multinomial logistic regression model, with a significance level of 5%. The most commonly used removable prosthesis was mandibular removable partial denture (RPD) (n = 43, 53.8%), followed by maxillary RPD (n = 42, 52.5%), maxillary complete denture (CD) (n = 33, 41.3%), and mandibular CD (n = 31, 38.8%). Most patients had to have one (n = 29, 36.3%), two (n = 21, 26.3%), or none (n = 18, 23.8%) adjustments in their prostheses. Five (6.3%) patients' prostheses required three adjustments, and six (7.5%) required four or more adjustments. All reported improvement in esthetics after using the prostheses (p < 0.05). The validation of the questionnaire proved to be more viable when completed without the presence of specific domains. The results of this study indicated that removable prostheses improved the quality of life of rehabilitated patients. The questionnaires used need to be answered and evaluated in their entirety for validation.

FREQUENCY OF TYPE OF COMMON MAJOR CONNECTOR DESIGN EMPLOYED IN REMOVABLE PARTIAL DENTURES PROVIDED TO PATIENT

Objective:&#x0D; To determine the frequency of the types of common major connector designs in removable partial dentures provided to patients.&#x0D; Materials and Methods:&#x0D; A cross-sectional study was done at Khyber College of Dentistry. Participants fulfilling the inclusion and exclusion criteria were invited to take part in the study. The information was collected using a single interviewer-administered questionnaire. The demographic information of the patient was recorded. Information related to the design of major connector wasrecorded after it was drawn on the cast, before it was sent to the laboratory. Data was analyzed using SPSS version 17.&#x0D; Results:&#x0D; Data from 207 subjects were collected over a period of 24 months. The mean age of subjects was 41.21 ± 9.13 (SD) years. Out of 207 subjects, 41.1% were males and 59.9% were females. Female to male ratio was 1.43:1. Out of total, 49.3% were maxillary and 50.7% were mandibular removable partial dentures.Removable partial dentures constructed from cobalt-chromium accounted for 152 of the observed cases.Of the 152 observed cases of removable partial dentures made of cobalt-chromium, 81 were in the mandibular arch and 71 were maxillary. The remaining 55 were made of acrylic resin, out of which 31 were maxillary and 24 belonged to the mandibular arch.The study concluded that the horse shoe shaped connector is the most common type of connector used in the maxillary removable partial dentures (both cast partial and acrylic RPD’s) and the lingual plate is the most frequent type of connector given in the mandibular removable partial dentures.&#x0D; Conclusion:&#x0D; The studyshowed that common maxillary cobalt-chromium major connectorwas the horseshoe shape, and that of mandibular cobalt-chromium major connector design was the lingual plate. Additionally, common acrylic RPD were horseshoe shape in maxilla and lingual plate in mandible.

Maxillary Bone Resorption with Conventional Dentures and Four-Implant–Supported Fixed Prosthesis Opposed by Distal-Extension Partial Dentures: A Preliminary 5-year Retrospective Study

The aim of this preliminary study was to evaluate maxillary bone resorption with conventional dentures and implant-supported prostheses opposed by distal-extension removable partial dentures (RPDs). Fifteen patients (seven women and eight men) with totally edentulous maxillary ridges and partially edentulous mandibular ridges (Class I Kennedy classification) received maxillary fixed prostheses on four implants and mandibular distal-extension RPDs (study group). The control group consisted of 15 patients who received conventional maxillary dentures and distal-extension mandibular RPDs without any implant treatment but were matched to the study group and acted as a historical group. Evaluation of vertical maxillary bone resorption for both groups was made at the time of prosthesis insertion (T0) and 5 years later (T2) using the proportional area measurements made on digital panoramic radiographs for anterior and posterior areas. The control group showed significantly higher vertical bone loss than the test group (P < .001). The control group had 0.270 higher maxillary bone loss than the test group. For both groups, anterior maxillary areas showed significantly higher bone loss than posterior areas (P < .003). Anterior maxillary areas had 0.122 higher bone loss compared with posterior areas. Women had 0.035 higher maxillary bone loss compared with men. Within the limitations of this study, implant-supported fixed prostheses for the edentulous maxilla opposed by remaining mandibular anterior teeth reduce maxillary anterior and posterior alveolar bone loss compared with conventional dentures. However, they do not prevent maxillary bone loss.

Class II Kennedy implant assisted mandibular removable partial dentures with and without cross arch stabilization: A strain gauge in vitro study.

Introduction Dental implants and extracoronal attachments were used with Kennedy class II implant assisted removable partial dentures (IARPD) without a major connector. strain gauges were used to detect the microstrains generated around the abutments and dental implants. Materials and Methods Thirty acrylic resin models of a mandibular class II Kennedy received 3 RPD designs; a clasp retained RPD in group I, a unilateral clasp retained RPD without a major connector supported by a dental implant placed once at the first molar and once at the second molar position in group II, and in group III, a clasp free RPD, with extracoronal attachments, supported by a dental implants placed in similar positions to group II. Strain gauges were used to determine which design generated more significant loads, and recorded microstrains were statistically analyzed using the Kruskal-Wallis and Mann-Whitney tests. Results Significantly greater loads around abutment teeth were reported in group II and group III than in group I. The distal placement of the implants resulted in significantly greater microstrains more than the mesial placement in groups II and III, and both placements were of more intensity in group II than in group III. Conclusions A Kennedy class II IARPD can be effectively altered to a bounded space prosthesis by placement of a dental implant in the first rather than the second molar position, and together with an extracoronal attachment, the clasp and major connector can be omitted once the edentulous span is short, and the clinical situation is favorable.

Palateless Complete Denture:A Minimally Invasive Approach to Preventive Case

Background: Tooth loss due to caries and various other consequences, can cause simple loss of function to long term deleterious effects on the remaining residual bone, oral proprioception, temporomandibular joints and facial appearance. Case Description: A 33 year old female patient with Kennedy’s class I edentulism in both the arches with just three teeth remaining in maxilla has been treated with attachment retained maxillary palateless overdenture and mandibular removable partial denture. The maxillary teeth 11 21 23 were endodontically treated and a short coping with rhein 83 attachment were cemented and a maxillary overdenture over this was fabricated. This was opposed by mandibular partial denture. This case report attempts to prevent the remaining teeth in the oral cavity and gives a cost effective treatment option to the patient considering her financial status. Conclusion: This case report emphasizes the use of preventive prosthodontics helping enhance the quality of life of patient

Bilateral Mandibular Posterior Edentulous Rehabilitation for Unstable Occlusion Patient with Bilateral Attachment Retained Mandibular Removable Partial Denture

A 62-year-old female patient came to the Dental Hospital of Universitas Airlangga to maintain her remaining teeth and make dentures for the missing teeth, and expressed that she expected a high aesthetic result. The patient had lost bilateral posterior mandibular teeth, resulting in unstable occlusion. To stabilize the occlusion, this patient was treated by temporary denture. After 3 months of follow up and confirmed adaptation with the new occlusion, prosthodontic treatment was done consisting of bilateral attachment retained mandibular removable partial denture, aimed at the patient’s expectation of acquiring good aesthetic results and functional rehabilitation.

An investigation into the prevalence of combination syndrome

ObjectivesTo investigate the prevalence of Combination Syndrome, and to investigate if provision of a mandibular removable partial denture has any influence on the prevalence of Combination Syndrome. MethodPatients attending Kings College London Dental Institute, Guys Hospital who wore maxillary conventional complete dentures opposing mandibular anterior teeth only, with or without mandibular partial dentures were examined by one examiner. Oral health, residual alveolar ridge and denture quality were assessed. Features putatively associated with Combination Syndrome were recorded. Patient ratings of dentures were recorded. Results99 patients were recruited who were wearing maxillary removable complete dentures opposing only mandibular anterior teeth. Of these, 64 patients wore mandibular removable partial dentures and 35 patients did not. Only 8 patients displayed two features of Combination Syndrome and 38 patients displayed one feature of Combination Syndrome, excessive resorption of the anterior maxillary sextant. These findings are not compatible with previous research which suggested that the five features of Combination Syndrome were prevalent in patients wearing maxillary complete dentures opposing mandibular anterior teeth. ConclusionsEvidence supporting the existence of Combination Syndrome was not discovered in this research. Prevalence of Combination Syndrome appeared to be low or non-existent. Patient treatment modalities and teaching in relation to Combination Syndrome may need to be modified.

Bite Force and Bone Height Changes around Abutments Retaining Mandibular Removable Partial Denture with Wrought Wire and Polyamide Clasps: Split Mouth Study

Objectives: This research highlights on the effect of polyamide clasp on the bone height changes of the abutment teeth and the bite force change comparing to conventional wrought wire clasp in a split mouth study. Materials and Methods: This split mouth research was carried out on 14 partially edentulous participants with mean age (61.14) year. For every participant, a resin bilateral distal extension removable partial denture was constructed to be retained by a wrought wire clasp on one side and a polyamide clasp on the other. Standardized digital periapical radiograph was used to evaluate the abutment alveolar bone height change after 12 and, 18 months from denture insertion. Bite force transducer was used to measure the bite force for both clasp types sides at insertion and after 18 month of follow up.Results: At comparing bone height change after insertion with the baseline, there was a significant increase in the bone resorption with the polyamide clasp after 18 month in mesial and distal aspect (p= 0.01 and 0.04 respectively); and after 12 month at mesial side (p=0.01). There is also a significant difference in bone height change around abutments carry both clasp types at 12 and 18 months in distal side (p= 0.03 and 0.001 respectively); and in the mesial side (p= 0.02 and 0.01 respectively). The evaluation of the bite force revealed significant difference between measurements at time of insertion and 18 months of for polyamide and wrought clasp sides (p= 0.02 and 0.043 respectively).Conclusion: This study results illustrated that both types of clasps were appropriate to be used with the acrylic removable partial denture as their influence on the abutment alveolar bone resorption is within the acceptable range of bone resorption. While there is a nonrelated-clasp type improvement in bite force.

A peerless method for identification of removable prosthesis

IntroductionForensic Odontology is the branch of dentistry, that plays a very important role in identification of individuals involved in accident, natural and mass disaster, civil unrest and also in genocide crimes. When natural teeth are not present, marking or labeling of removable partial denture plays an important role in the personal identification. The aim of this study was to obtain a denture identification technique that should be easy, less expensive, long lasting, and standardized. Methods & materialsThis poster illustrates an inclusion of the casted individual national identification number that is printed in the patient’s residence or national identity card issued by the ministry of interior of country in the lingual surface of mandibular removable partial denture. ResultThe label used in this method is durable and can withstand high temperature, it has less chances of deterioration, and is visible radio graphically. It provides all important information about an individual that is standardized, reliable, and is also easily accessible from any remote location. ConclusionThis technique is easy, less expensive, long lasting, visible radio graphically, and a standardized method of identification.

Assessment of two different Splinting materials on the immediate functional loading of Implants placed in mandibular unilateral free end saddle cases

Background: The class II Kennedy mandibular removable partial denture has many problemsas the different nature of support as well as crossing the arch for stabilization. The Target of thiswork was to evaluate the changes that occurs in the supporting structures of the implantsplaced in class II Kennedy cases as a result of two different types of splinting materials.Materials and Methods: Thirty implants were placed in ten patients with unmodifiedmandibular Kennedy Class II. For each patient, three implants were placed at the premolar/molarmandibular region. All the implants were immediately loaded following an Immediate FunctionalLoading Protocol. Patients were divided into two equal groups; Group A: received superstructuresthat were splinted with acrylic resin while Group B; received superstructures that were splintedwith metal. Radiographic evaluation using dental CT was carried out at intervals of 0, 6, 12 and24 months after implant surgery.Results: The results comprised the assessment of the bone height changes surrounding thethree implants placed unilaterally in the posterior mandibular areas of ten patients as a result of twodifferent splinting materials; the acrylic resin and the chrome cobalt metal alloy. Statistical analysisshowed that there was a statistically significant difference in the mean bone height values along thewhole study period between both groups (P ≤ 0.05) where there was more favorable bone heightvalues and hard tissue reaction in Group B (metal splinting) than Group A (Acrylic splinting).Conclusion: Within the limitation of this study, it can be concluded that the rigid splintingand immobilization of immediately loaded implants by metallic superstructures reduced thetransmission of micro-motion to the implant bodies and improved peri-implant bone reaction incomparison with the use of the less rigid acrylic resin material.

Clinical application of mandibular removable partial denture using implant-supported surveyed crown: A case report

Clinical application of mandibular removable partial denture using implant-supported surveyed crown: A case report

Avaliação da qualidade de vida de indivíduos desdentados mono ou bimaxilares em busca de atendimento no sistema público de saúde

Objetivo: o objetivo deste estudo foi avaliar a influência do edentulismo parcial ou total na qualidade de vida de pacientes idosos. Material e Métodos: a amostra foi composta por 120 indivíduos, divididos em pacientes desdentados com prótese total bi-maxilar (CD) (n = 60) ou parcialmente desdentados com CD maxilar e prótese parcial removível mandibular (RPD) (n = 60). A qualidade de vida dos pacientes foi avaliada pelo questionário OHIP-EDENT-19 e os dados foram analisados ??no software SPSS. Resultados: os pacientes em uso de RPD apresentaram maior qualidade de vida em relação aos usuários de CD duplo, de acordo com os valores apresentados no OHIP-EDENT. Diferenças estatisticamente significantes foram encontradas quando comparados os grupos entre queixas relacionadas à mastigação (dificuldade de mastigar, desconforto ao comer, evitar comer, interrupção de refeições), desconforto psicológico e incapacidade (incapacidade de comer), incapacidade social (vida insatisfatória) e boca dolorosa desconforto (próteses inadequadas, dor na boca). Conclusão: o tipo de prótese utilizado pode influenciar a qualidade de vida autorreferida.

Prosthetic rehabilitation in a patient with Singleton Merten syndrome and acrylic resin hypersensitivity

Singleton Merten Syndrome is a rare disease characterized by the presence of the dental dysplasia phenotype, calcifications in the aorta, progressive wear and loss of bone protein (osteoporosis) in the hands and feet. Patients have muscle weakness, poor motor development, abnormal dentition, deformities of thefeet and hands, and skin lesions. Objective: This report describes the maxillomandibular rehabilitation of a patient with Singleton Merten Syndrome and an allergic reaction to the acrylic resin through maxillary overdenture and mandibular partial removable denture. Case report: Female patient, 18 years old, with clinical characteristics of Singleton Merten Syndrome and allergic reaction to acrylic resin, with complaints of loss of function and esthetics dueto the absence of several teeth, but with the presence of unerupted maxillary and mandibular tooth buds. Maxillary overdenture and mandibular removable partial denture were made of polyethylene. Conclusion: The rehabilitation treatment with maxillary overdenture and mandibular partial removable denture provided better facial muscle support, restoring masticatory function and facial esthetics. With this treatment, it was possible to reestablish patient’s satisfactionand self-esteem due to the correct construction of the prostheses, and minimize hypersensitivity reactions in the oral mucosa, which allowed the use of these prostheses by the patient without any complications.