Acrylic Removable Partial Dentures Research Articles

Acrylic Removable Partial Dentures

Acrylic Removable Partial Dentures

Dental Students' Perception and Self-Perceived Confidence Level in Key Dental Procedures for General Practice and the Impact of Competency Implementation on Their Confidence Level, Part I (Prosthodontics and Conservative Dentistry).

Evaluating the level of dental students' competence is crucial for validating their preparedness for graduation. Confidence has a significant role in achieving competence. There are limited studies that assess the level of self-perceived confidence among final-year dental students regarding their ability to conduct key dental procedures. This study aims to assess the self-perceived confidence level of final-year dental students in performing essential dental procedures across various dental disciplines and to assess the effect of implementing competencies in the curriculum on the self-perceived confidence level of students by comparing two cohorts of final-year students in two different years 2016 (Traditional Cohort) and 2019 (Competencies Cohort). An questionnaire was answered by two cohorts of final-year dental students: one group in 2016 before the implementation of the competency-based assessment system (group 1, n = 153), and the other in 2019 after the implementation of this system (group 2, n = 199), the same questionnaire was used for both cohorts. The results from the two groups were compared regarding the degree of self-perceived confidence in conducting key dental procedures. The data were analysed using SPSS statistics and Levene's Test for Equality of Variances and t-test for Equality of Means calculated. Group 1 showed a significantly higher means of self-perceived confidence levels than group 2 in the ability to conduct seven out of the 20 prosthodontics procedures studied: providing patients with Cobalt-Chromium (Co-Cr) removable partial dentures (RPD) (3.77 vs. 3.56), providing the patient with Acrylic RPD (3.70 vs. 3.23), treatment planning for partially edentulous patients (3.83 vs. 3.34), giving OHIs for denture patients (4.17 vs. 3.95), dealing with CD postinsertion complaints (3.97 vs. 3.76), giving postinsertion instructions for removable prostheses cases (4.12 vs. 3.82), and providing patients with immediate dentures (2.67 vs. 2.32). The same applies to 6 out of 16 conservative dentistry procedures: placing anterior composite (4.41 vs. 4.12), placing posterior composite (4.43 vs. 3.88), placing posterior amalgam (4.29 vs. 4.02), placing matrix band for Class II restorations (4.24 vs. 3.71), placing a prefabricated post (3.34 vs. 2.88), and placing fiber post (3.45 vs. 3.34). On the other hand, group 2 shows higher means of self-perceived confidence than group 1 in only two conservative dentistry procedures: onlay restorations (2.18 vs. 2.76) and inlay restorations (2.22 vs. 2.75). No significant differences in means of self-perceived confidence were found between the two groups in the remaining 21 procedures studied. This study has shown that final-year dental students have high self-perceived confidence levels in doing simple dental procedures yet less confidence in more complex ones. Although, students' self-perceived confidence decreases after the introduction of a competency-based assessment system. Competency implementation and execution criteria may differ between schools which may have an impact on final outcomes. Hence, there is a need for regular evaluation of competencies being assessed to maintain a curriculum that is up to date.

Analysis of Denture Base Displacement between Conventional Acrylic Removable Partial Dentures and Click Fit Partials for Kennedy\'s Class I and II Situations: An In Vitro Study

The aim of this study was to evaluate the displacement of the denture base of conventional acrylic dentures and Click Fit partials in Kennedy's class I and II situations in the mandibular arch. Four removable partial dentures-two conventional clasp dentures and two attachment dentures (Click Fit)-were designed. The two conventional clasp dentures were retained by C (conventional) clasps, and the two attachment dentures were retained by rigid precision attachments. The displacement of denture bases and the movements of denture bases were investigated, and the influences of denture design were studied. The values obtained were statistically analyzed by using independent t-tests. For all statistical purposes, a p-value of ≤0.001 was considered significant. The results showed that mean vertical displacements (mm) of the conventional acrylic removable partial denture base for Kennedy's class I mandibular arch under 50, 75, and 100 N forces were 0.0317, 0.04377, and 0.06392, respectively, and those for Kennedy's class II mandibular arch under 50, 75, and 100 N forces were 0.04922, 0.09849, and 0.1522, respectively. Vertical displacements (mm) of the Click Fit removable partial denture base for Kennedy's class I mandibular arch under 50, 75, and 100 N forces were 0.02185, 0.03436, and 0.005365, respectively, and those for Kennedy's class II mandibular arch under 50N, 75N, and 100N forces were 0.0445, 0.07851, and 0.14457, respectively. The difference between the groups was statistically significant (p ≤0.001). The vertical displacement of the denture base retained by conventional C clasps was more than that of the denture base retained by rigid precision attachment. The displacement of the denture base tended to be less when the denture was designed with a rigid connection for the retainer and with cross-arch stabilization as in Kennedy's class I case. This research evaluated the vertical denture base displacement using different designs and retention types. Hence, it helped predict the prognosis of different removable partial denture base designs in various clinical conditions.

Prevalence of Acrylic Removable Partial Dentures among Adult Patients Attending Public Dental Clinics in Dar-es-Salaam, Tanzania

Prevalence of Acrylic Removable Partial Dentures among Adult Patients Attending Public Dental Clinics in Dar-es-Salaam, Tanzania

Effects of acrylic removable partial dentures on periodontal health of abutment teeth.

Objective: To assess the outcomes in patients wearing particularly designed acrylic removable partial dentures at different time intervals. Study Design: Descriptive Case Series Study. Setting: Department of Prosthodontics, FMH College of Dentistry, Lahore. Period: October 2017 to April, 2018. Material & Methods: Sixty five (65) abutments of acrylic removable partial denture wearers were included in the study for assessment of Mean Clinical Attachment Level (CAL), Tooth Mobility (TM) and Mean Gingival Index (GI). These periodontal parameters were clinically assessed at the day of insertion, 30th day and 60th day of insertion. Mean Clinical Attachment Level (CAL) was measured by William’s Probe. Tooth Mobility (TM) was assessed using Miller’s Classification. Gingival health was evaluated using the Gingival Index (GI) of Loe and Silness. Mean and standard deviation were calculated for patient’s age and all the periodontal scores of abutment teeth. Data was stratified for age and gender to identify the effect modifiers. Pearson chi-square test was used for Mean Gingival Index, and Mean Tooth Mobility. Post-stratification student t-test for Mean Clinical Attachment Level was used to compare the results with p ≤ 0.05 considered as significant. Results: Sstatistically insignificant results for all the periodontal parameters, i.e. the Mean Gingival Index (GI), Tooth Mobility (TM) and Mean Clinical Attachment Loss (CAL) were observed, age being not influencing the periodontal health of abutments. The only statistically significant (p= 0.01) result was observed for the Tooth Mobility (TM) in gender categories at the day of insertion and the 30th day of insertion. Conclusion: All the periodontal parameters, except tooth mobility (TM) assessed in the study, were not affected by the acrylic removable partial denture wearing.

Replacement of missing teeth in a southern region of Vietnam — a descriptive dental laboratory study

To explore whether tooth replacement in a southern region of Vietnam is in line with the primary health care approach, aiming at health services for all people at affordable costs. Tooth replacement was investigated by means of prostheses as delivered by four dental laboratories of which the output was considered representative. Information was based on dental casts related to the prostheses. Prostheses replaced almost all missing teeth, irrespective of the types (interrupted or shortened dental arches) and numbers of missing teeth in the dental arch they were made for. Acrylic removable partial dentures were the most common prostheses delivered (65% of removable partial dentures). It cannot be stated that dental arch conditions in this study were representative for the southern Vietnamese population. However, it is concluded that dental practitioners tend to provide complete dental arches by tooth replacements. This morphologically based approach might introduce over treatment. In line with primary oral health care, a functionally oriented treatment management, including the shortened dental arch concept, should be implemented.

Dental Caries Prevalence among Diabetics Acrylic Partial Denture Wearer’s- A Review

Introduction: Dental caries is one of the most common oral health conditions affecting 60-90% of the population. The progression of dental caries results in tooth loss if not treated properly. Tooth loss will presumably cause functional impairment which might ultimately affect the quality of life. Removable partial denture is one of the most widely accepted means of tooth replacement. It had been noticed that removable partial dentures increased the likelihood of new or recurrent caries on remaining adjacent natural teeth. Diabetes mellitus is the most routinely encountered disease among various systemic diseases. Studies revealed that dental caries has been more prevalent and even severe in diabetic patients than nondiabetics. Aim: To assess the effect of Acrylic Removable Partial Dentures (RPD) and diabetes in prevalence of dental caries. Materials and Methods: This study was carried out in JSSDCH, JSSAHER, Mysuru, Karnataka in the year July 2017. The duration of conducting literature search was from July 2017 to Dec 2019. Individuals participating in the study should be partially edentulous and aged between 18-64 years either diabetic or nondiabetic. 69 articles were identified from searching electronic data base (Pubmed, Cochrane, Google scholar) and manual searching from July 2017 to December 2019. 19 articles were excluded following an initial screening. 50 articles were included for the further review. Scientific evidence supporting the hypothesis of the study 10 articles where five articles were review and five articles were original research. The main outcome of intervention involved both methodology and assessment tools applied by investigator to assess the effect of RPD and diabetes in terms of prevalence of dental caries. Results: Studies had shown that RPD wearers shows high caries prevalence as compared to nonwearers, Diabetic patients reported high caries prevalence compared to nondiabetic patients. This literature review states that RPD and Diabetes had an impact on prevalence of dental caries. Conclusion: The conclusion from this present review would indicates that good metabolic control in diabetic patients, periodic monitoring of the removable partial denture, oral hygiene, good RPD design framework, following post-insertion instruction of the RPD, following regular recall visits contributes towards prevention of plaque favouring inhibition of caries prevalence among diabetic and nondiabetic patients wearing RPD.

Frequency of complete and removable partial denture treatment in the primary health centres in three different regions of Kosovo from 2002 to 2013

IntroductionEdentulism and prosthodontic care are very common, especially in the elderly. The study investigated the treatment with complete dentures (CDs) and acrylic removable partial dentures (ARPDs) among people receiving new prosthodontic treatment in the Primary Health Centres of the three regions in Kosovo from 2002 to 2013.MethodsThe data on ARPDs delivery and CDs delivery was obtained from the archives of primary health centres from three Kosovo regions (Prizren, Peje, Ferizaj) from 2002 to 2013. The data was analysed concerning year of treatment, type of dentures, jaw, age, gender and urban or rural origin of the patients. The trend of treatment was determined, and the binomial logistic regression model was used for predicting odds of ARPD versus CD treatment by year of treatment and patient characteristics.ResultsFrom 2002 to 2013, 9,478 patients received 11,655 CDs and 4,401 ARPDs. Delivery of CDs significantly increased by 57.45 dentures per year (R2=0.609) and delivery of ARPDs by 30.39 dentures per year (R2=0.569). Each year the odds for ARPD versus CD increased by 4.2% (95% CI: 3.0%–5.4%). Younger patients have higher odds for ARPD rather than CD and odds for ARPD are decreasing as the age of patients rises. The gender, residence, and jaw all had a significant impact on prosthodontic treatment too.ConclusionsIn Primary Health Centres of Kosovo, there is a trend for higher frequencies of both dentures (more obvious for ARPD), and the frequency is highly dependent on the age of patients.

Isolation and quantification of DNA from epithelial cells obtained from acrylic removable partial denture for sex identification

BackgroundThis study is aimed to evaluate the use of epithelial cells adhering the acrylic removable partial denture in establishing the sex of the individual using sex-determining region of the Y chromosome (SRY) gene. With a hypothesis that prosthetic appliance can also be used as a source of DNA in forensics for sex determination. A sample of 30 partial dentures from different denture wearers was selected for this study. Informed consent was taken from the subjects and institutional ethical clearance was obtained for this study. Samples were then washed in saline and scrapings from 0.5 × 0.5 cm2 of the tissue contacting surface were taken using a blade of fixed thickness. DNA extraction was done from these isolated epithelial cells using Real Genomics YGB 100 (Real Biotech Corporation, Taiwan). Quantification and purity assessment of the extracted DNA was done using a Nanodrop ND-1000 spectrophotometer and clean DNA was subjected to real-time PCR amplification using SRY sex-typing marker for the detection of the presence of the SRY gene.ResultsIsolation of epithelial cells and extraction of DNA from all 30 acrylic removable partial dentures were possible. Average DNA yield quantified from all samples was 32.37 ng/μl with a minimum yield of 2.17 ng/μl and a maximum yield of 117.57 ng/μl. On amplification of the target sequence, sex determination was possible from all samples with 100% accuracy.ConclusionAcrylic removable partial denture can also be used as a source of DNA in forensics for sex identification.

The Perceptions of Dentists Working in Saudi Arabia of the Utility of Different Restoration Options for a Shortened Dental Arch in Patients of Different Ages.

This study aimed to assess dentists' views of the utility of an unrestored shortened dental arch (SDA) compared to the utility of various prosthetic treatment options. A total of 142 dentists working at four sites in Riyadh, Saudi Arabia, were interviewed and presented with 18 scenarios for patients of different ages with SDAs that lost molar teeth. Participants were asked to indicate on a standardized visual analog scale (VAS) how they would value the health of the patient's mouth if the SDAs were left unrestored or restored with five prosthetic dental restorations. With a utility value of 0.0 representing the worst possible health state for a mouth and 1.0 representing the best, dentists' mean utility value for unrestored SDAs was 0.43 (standard deviation [SD] = 0.28). For implant-supported fixed dental prostheses (ISFDPs), cobalt-chromium removable partial dentures (RPDs), acrylic RPDs, cantilever conventional fixed dental prostheses (CFDPs), and cantilever resin-bonded fixed dental prostheses (RBFDPs), the mean utility values were 0.64 (SD = 0.27), 0.54 (SD = 0.20), 0.48 (SD = 0.20), 0.42 (SD = 0.28), and 0.39 (SD = 0.27), respectively. Neither patient age nor dentists' clinical experience had an impact on dentists' perceptions of the utility of unrestored SDAs and outcomes of this treatment concept (P > .01). Restoration of SDAs by ISFDPs received the highest utility value among the surveyed group of dentists. Although the assigned value for unrestored SDAs was low, this value was comparable to the value of SDAs that were restored by acrylic RPDs or cantilever FDPs of either type.

Evaluation of knowledge level of dental practitioners regarding treatment with provisional acrylic removable partial dentures among patients in Erode District: A cross-sectional survey

Evaluation of knowledge level of dental practitioners regarding treatment with provisional acrylic removable partial dentures among patients in Erode District: A cross-sectional survey

A Survey of Prosthodontics Techniques Applied by Dental Practitioners in Sulaimani City

Background: Prosthodontic services have changed markedly due to an introduction of new materials, techniques and treatment options. The aim of this study were to identify the type of materials and the methods used by dental practitioners in their clinics to construct conventional complete dentures and to specify the type and design for removable partial dentures (RPDs); and to then compare them with those taught in dental schools. Materials and methods: A total of 153 dental practitioners in Sulaimani city completed a written questionnaire. The questionnaire included 19 questions regarding complete and RPDs fabrication. Results: Most of the practitioners provide complete dentures (81.6%) and RPDs (95.3%) in their clinics. Polyvinyl siloxane 38.4% and irreversible hydrocolloid 37.6% impression materials were most commonly used to make the preliminary and zinc oxide eugenol 52% for final impressions. The majority of participants did not disinfect their impressions (73.9%). In order to establish the vertical and centric relations, different methods were used. Many practitioners depend on dental technicians to determine the post-dum area (42.4%) and all of them faced different problems during fabrication of the complete denture. Acrylic RPDs were the main type of RPDs provided (89.7%), followed by flexible partial dentures (70.5%). The minority constructed cast metal RPDs (18.4%). Conclusions: Private practitioners did not perform most of the techniques nor use the procedures or materials that are being taught in dental schools. There is a need for continuing dental education programs for improving their clinical skills. Moreover reassessing of the prosthodontic curriculum of the related dental schools is required.

Temporary Solution for a Permanent Smile! Natural Tooth Pontic - A Report of Two Cases

Difficult esthetic situation of having to remove an anterior tooth because of trauma, advanced periodontal disease, root resorption or failed endodontic therapy are often encountered. Although a permanent replacement, may be planned after the tissues have healed, the options available for a good esthetic temporary prosthesis are limited. Acrylic removable partial dentures placed immediately after the tooth is extracted are bulky, may be uncomfortable for the patient, may impede healing and can present challenges in regard to matching color, size and shape. Using the natural tooth as a pontic offers the benefits of being the right size, shape and color. Moreover, the positive psychological value to the patient in using his or her natural tooth is an added benefit. When the crown of the tooth is in good condition, it can be temporarily bonded easily to the adjacent teeth with light-cured restorative material. This paper presents two cases of socially conscious patients who wanted to save their tooth, so natural tooth pontics were given to them.

Subjective values of different age groups in Japan regarding treatment for missing molars

To determine how patients and dentists in Japan value the outcomes of different treatment options for missing molars. Elderly removable-denture wearers and dentate persons (senior group), preclinical dental students (young group), and prosthodontists were presented with five possible treatment options for missing lower bilateral first and second molars. The participants indicated on a visual analogue scale how they would value the treatment (utility value: UV), if they had received each of the treatments. Two-way repeated measures anova was used for statistical analyses. The UV for the shortened dental arch (SDA) without replacement was the lowest in every group. The young group rated the value of cantilever fixed partial dentures (FPD) and implants significantly higher than removable partial dentures (RPD), while the senior group rated the value of FPD and RPD significantly higher than implants. Those having experience with removable dentures were likely to place a higher value on the acrylic RPD. The prosthodontists rated the value of implants significantly higher than any other options. The participants in every group placed the lowest value on the outcome from the SDA in Japan. The denture wearers preferred the RPD, while prosthodontists preferred implants.

RPD teaching in the UK and Ireland

Aim The aim of this paper is to investigate methods employed for teaching removable partial dentures in dental schools in Ireland and the United Kingdom. Materials and methods A questionnaire was distributed by email in May 2005 to each of the 15 dental schools with undergraduate dental degree programmes in Ireland and the UK. The questionnaire sought information relating to the preclinical and clinical teaching of removable partial dentures (both acrylic and cobalt-chromium based dentures). Results Eleven completed questionnaires were returned. The average duration of a preclinical course in removable partial dentures was 67 hours (range = 24-200 hours). This course was directed by a senior clinical academic alone in eight schools, by a senior clinical academic in collaboration with a dental technician in two schools, and solely by a dental instructor technician in one school. The median number of cobalt-chromium and acrylic removable partial dentures provided by undergraduate dental students was 3 (range = 2-5) and 2 (range = 0-3), respectively. Four schools reported that their patient pool is not entirely satisfactory for clinical teaching of undergraduate dental students. Conclusion Variations were noted between dental schools in both the amount and content of teaching programmes. Experience gained by undergraduate students in dental schools is limited, and appears to be hampered by limited access to patients suitable for undergraduate teaching.

The teaching of removable partial dentures in Ireland and the United Kingdom

The aim of this paper is to investigate methods employed for teaching removable partial dentures in dental schools in Ireland and the United kingdom. A questionnaire was distributed by email in May 2005 to each of the 15 dental schools with undergraduate dental degree programmes in Ireland and the UK. The questionnaire sought information relating to the preclinical and clinical teaching of removable partial dentures (both acrylic and cobalt-chromium based dentures). Eleven completed questionnaires were returned. The average duration of a preclinical course in removable partial dentures was 67 hours (range = 24-200 hours). This course was directed by a senior clinical academic alone in eight schools, by a senior clinical academic in collaboration with a dental technician in two schools, and solely by a dental instructor technician in one school. The median number of cobalt-chromium and acrylic removable partial dentures provided by undergraduate dental students was 3 (range = 2-5) and 2 (range = 0-3), respectively. Four schools reported that their patient pool is not entirely satisfactory for clinical teaching of undergraduate dental students. Variations were noted between dental schools in both the amount and content of teaching programmes. Experience gained by undergraduate students in dental schools is limited, and appears to be hampered by limited access to patients suitable for undergraduate teaching.

Prevalence of temporomandibular disorder signs in patients with complete versus partial dentures

To determine the prevalence of signs of a temporomandibular disorder (TMD) in completely edentulous patients wearing upper and lower complete dentures (CD) and to compare this to the prevalence of signs in partially edentulous patients wearing upper and lower clasp-retained acrylic removable partial dentures (RPD). A questionnaire and a clinical examination were used to assess 200 patients. One hundred of these were complete denture wearers being treated for the provision of replacement CD. The other 100 patients were partially edentulous patients, who had RPD replacing upper and lower partially missing teeth and their supporting structures. It was shown that there was a statistically significant difference between the two groups regarding the presence of temporomandibular signs. Partially edentulous patients wearing upper and lower RPD had a significantly higher prevalence of TMD signs than edentulous patients wearing CD (36% compared to 17%). They also exhibited significantly (P<0.04) more signs of joint tenderness (18%) on clinical examination compared to (5%) only in the CD-wearing patients. Tenderness upon palpation in the periauricular region was the most common site reported in both groups. The partially edentulous patients (wearing RPD) exhibited more TMD signs when compared with the CD-wearing patients. Significantly, more partially edentulous patients had joint tenderness (P<0.04) than did CD-wearing patients. The masseter muscle most commonly demonstrated muscle tenderness.

A 5-year follow-up study on the prosthetic rehabilitation of the elderly in Helsinki, Finland.

In 1990, 364 elderly (76-86 years) inhabitants of Helsinki, Finland, attended a dental and oral examination study that was conducted as part of the Helsinki Aging Study. In spring 1996, these subjects were recalled for a 5-year follow-up. Between the baseline and follow-up examinations, 114 (31%) subjects had deceased (86 women and 28 men), whereas 134 had either moved, were too ill, or refused to participate in the follow-up. Follow-up examination was conducted for 113 subjects (79 women and 34 men), with the participating rate being 46%. Five subjects became edentulous during the follow-up. Of the subjects, 61% had 1-32 teeth at follow-up. In these subjects, the mean number of teeth decreased from 14.9 (+/-8.3) to 13.5 (+/-8.6) (P < 0.0001). Prosthetic status changed in 40% of the elderly dentate people: 25% received new prostheses whereas 15% lost prostheses that were not replaced. New fixed partial dentures were made in five maxillae and in nine mandibles during the follow-up. Acrylic removable partial dentures (ARPD) were most frequently used: 35% of dentate subjects had an ARPD. Subjects with removable prostheses had higher levels of salivary microbes and higher root caries incidence than those with natural teeth. Furthermore, the presence of removable prostheses at baseline, together with the male gender, was clearly associated with tooth loss during follow-up. This study indicates that fixed rather than removable prostheses should be used in elderly patients. The need for a removable denture ought to be carefully considered.

Acrylic partial dentures.

Acrylic removable partial dentures are routinely used in everyday clinical practice. However, there is concern that if they are not correctly designed that damage may result to the soft and hard tissues leading to tooth loss. This article reviews the potential damage that may occur from the use of acrylic dentures. Methods of improving the design features and construction of acrylic RPDs to minimize damage and improve longevity of the remaining teeth will be demonstrated.

Prosthetic rehabilitation in the elderly inhabitants of Helsinki, Finland.

The aim of this study was to document the number of remaining natural teeth, to examine the prosthetic rehabilitation and to evaluate further prosthetic treatment needs among a representative sample of 76-86-year-old inhabitants of Helsinki. The edentulous made up 46% (168) of the subjects, 40% of the men and 48% of the women. Of these edentulous, 94% (158) wore complete dentures in both jaws, 2% wore only a maxillary denture, and 4% wore no dentures at all. One edentulous subject had an implant-supported overdenture in the lower jaw. More than half (54%) of all subjects had 1-32 natural teeth left. These dentate subjects had 47% (mean 13.2, excluding the wisdom teeth) of their natural teeth remaining. Of the remaining teeth, 13% (mean 1.8) were crowned and 5% (mean 0.6) were indicated to be extracted. Among the dentate, 37% (mean 10.4) of their natural teeth were missing and replaced by some type of fixed or removable prosthesis. Eleven per cent (mean 3.1) of missing teeth had not been replaced and were considered not to need prosthetic replacement. However, 5% (mean 1.3) of the missing teeth without prosthetic replacement were judged to need a prosthesis. Among the dentate, 37% wore a complete denture in one jaw; 34% of the dentate subjects used acrylic removable partial dentures (ARPD), and 19% used metallic removable partial dentures (MRPD). Of the dentate, 45% had crowns and fixed bridges. Altogether, 25% wore some kind of combination of fixed and removable prosthesis, whereas 14% had no type of prosthetic rehabilitation at all. The age of the current prosthesis varied from less than one year to over 50 years. Of all the subjects, 37% (6% of the edentulous and 63% of the dentate) had experienced inadequate prosthetic rehabilitation.