Complete Dentures Research Articles

Evaluation of different baseplate materials on casts with various palatal vault depths

The choice of baseplate material for a trial complete maxillary denture is a critical decision in prosthodontic practice. One significant factor to consider is the depth of the palatal vault, which can influence the suitability of the baseplate material. Close adaptation of the denture base is essential in preventing lateral denture movement and enhancing denture retention and support.

Influence of prosthodontic rehabilitation and dietary advice on glycaemic control, nutritional status and oral health-related quality of life of older adults with type 2 diabetes.

This prospective clinical study aimed to determine the influence of oral prosthodontic rehabilitation with partial removable dentures and simplified dietary advice on glycaemic control, nutritional status and oral health-related quality of life (OHRQoL) of older adults with type 2 diabetes. Individuals with tooth loss who did not wear complete or partial dentures are more likely to be at nutritional risk, suggesting that using dental prostheses would benefit the re-establishment of an adequate nutritional status and potentially improve quality of life. Nutritional therapy is essential for diabetes prevention, treatment and management, favouring glycaemic control. The literature provides little evidence on the contribution of partial removable dentures to improving diabetes control, nutritional profile and satisfaction in older adults, especially those with type 2 diabetes. Older individuals diagnosed with type 2 diabetes mellitus, aged 60 years or older and needing oral rehabilitation with partial removable dentures were eligible for this prospective study. The primary outcome measure was glycaemic control, measured by glycated haemoglobin (HbA1c) levels. The Oral Health Impact Profile (OHIP-14) questionnaire and the Mini Nutritional Assessment short-form (MNA-SF) represented secondary outcome measures. These measures were assessed at baseline and 12 months of follow-up after prosthesis delivery, combined with simple dietary advice in pamphlet form. The data were analysed using the Wilcoxon matched-pairs test. Forty-four patients who met the inclusion criteria and required treatment with removable partial dentures were selected for this study, which was carried out for a year. During this period, seven participants declined to participate because they moved to another city. Hence, a final sample of 37 participants (16 men and 21 women, average age of 65.8 years, ranging from 60 to 83 years) were included in the study. No laboratory parameter (HbA1c levels) changed significantly during the investigation. The number of older adults at risk of malnutrition was significantly lower at 12 months than at baseline. Furthermore, nutritional status significantly improved 12 months after prosthodontic treatment combined with dietary advice, and the effect sizes were large. OHRQoL significantly improved after prosthodontic therapy combined with dietary advice. Prosthodontic treatment with partial dentures associated with simple dietary advice did not influence glycaemic control but improved the nutritional status and OHRQoL of older adults with type 2 diabetes.

Stereophotometric facial changes in edentulous older adults after rehabilitation with complete dentures.

To evaluate the facial characteristics of edentulous older adults who underwent rehabilitation using complete dentures, and to compare them with dentate individuals. Edentulism rehabilitation with complete dentures aims to restore occlusion and facial aesthetics. The study included 102 edentulous participants needing prosthodontic rehabilitation with complete dentures and 30 with a natural dentition (aged >65). The 3D facial scans were performed using an Artec optical scanner. Superficial facial landmarks were identified, and 16 parameters were calculated. Regional analysis with the superimposition of two scans was used to calculate the average distances and percentage of non-matching surfaces in the 11 regions. Paired and independent t-tests (α = .05) were used to test for group differences, as appropriate. After rehabilitation with complete dentures, facial changes were most noticeable in the perioral region: wider rima oris, longer upper lip, wider upper vermilion, and more protruded profile. The comparison of facial regions without and with dentures showed fuller and curvier cheeks, with no direct influence of dentures. The edentulous faces with dentures appeared shorter and more retruded than those of dentate individuals. A narrower lower vermilion, retruded upper lip, and more flattened facial profile were observed in females with dentures than in their dentate peers. Besides the expected positive influence of rehabilitation with complete dentures on facial appearance in the perioral region, there are some unexpected changes, such as fuller cheeks, but there is still deficiency in vertical facial dimensions and a more flattened facial profile.

The Effect of the Incorporation of a 3D-Printed Titanium Framework on the Mechanical Properties CAD/CAM Denture Base Materials

Background: Complete dentures should withstand occlusal forces and wear. However, over time, dentures can suffer fatigue and develop cracks, chipping, and fractures. Conventional methods for the fabrication of complete dentures involve injection molding, thermal curing, and the use of microwaves with polymethyl methacrylate (PMMA)-based materials. These methods have served well for many years. More recently, the incorporation of computer-aided design and computer-aided manufacturing (CAD/CAM) to fabricate complete dentures has been shown to enhance the dentures’ mechanical properties, including resistance to wear and impact strength. This study aims to investigate the mechanical properties and fracture types of CAD/CAM denture base materials (both milled and printed) as compared to a novel proprietary method that embeds a 3D-printed framework within PMMA-milled blocks. The null hypothesis is that incorporating a 3D-printed framework does not affect the mechanical properties of milled PMMA blocks. Methods: Three groups of bars were fabricated using CAD/CAM methods: printed (P), milled (M), and milled with a 3D-printed metallic framework reinforcement (M + F). A three-point bending test evaluated deformation, followed by an impact fracture test for fracture toughness. A descriptive fractographic analysis assessed the fracture characteristics. A statistical analysis using a paired t-test compared the differences between the groups. Results: The P group showed more elastic deformation than the M and M + F groups (p < 0.05). The M + F group achieved a higher fracture toughness as compared to the M and P groups (p < 0.05). Conclusions: Within the limitations of this experimental study, the null hypothesis can be rejected. Milled samples with an embedded 3D-printed titanium framework possess higher resistance to impact than milled samples without frameworks, and printed samples and milled samples with embedded 3d-printed titanium frameworks present increased flexural strength and lower elastic deformation as compared to milled samples without frameworks and printed samples.

Fabrication of an Immediate Complete Denture with Digital Workflow: A Case Report

Fabrication of an Immediate Complete Denture with Digital Workflow: A Case Report

Efficient Digital Workflow to Replace a Missing Denture Tooth for Complete Denture Repair.

Debonded denture teeth is a common complication on a fixed or removable dental prosthesis when denture teeth are fabricated separately from the denture base and bonded together. Missing denture teeth can alter a person's appearance, speech, or ability to eat. Traditionally, denture teeth repair can be a challenge for clinicians or dental laboratory technicians to find the identical tooth mould to meet esthetic and functional demands. This case report describes a digital workflow to scan, design, and mill a well-fitting and esthetic denture tooth to expedite treatment, improve patient satisfaction, and increase troop readiness when traditional methods may not be feasible.

An apically positioned flap and free gingival graft around an implant

Following the ‘2017 World Workshop on the Classification of Periodontal and Peri-Implant Diseases and Conditions,’ hard and soft tissue deficiencies have been debated in the literature with keratinized mucosa at the forefront. In this case report, the present author investigated whether an apically positioned flap and free gingival graft to increase keratinized mucosa and vestibular depth improved oral hygiene and patient comfort around an implant-retained upper complete denture. Using an apically positioned flap in combination with free gingival graft to augment the soft tissues around implants with hard and soft tissue deficiencies, increased both the keratinized mucosa and vestibular depth to correct the soft tissue deficiencies. This case report highlights the importance keratinized mucosa and vestibular depth has at the patient and site level in improving oral hygiene and patient comfort. This case report also supports the growing evidence that the ideal periodontal phenotype around implants is to have keratinized mucosa ≥2 mm and vestibular depth ≥4 mm. CPD/Clinical Relevance: This case report supports growing evidence that the ideal periodontal phenotype around implants is to have keratinized mucosa ≥2 mm and vestibular depth ≥4 mm.

A comparative assessment of condylar inclination in completely edentulous patients using cone beam computed tomography and Arcus digma II

Statement of problemCondylar inclination affects denture fabrication and placement, especially when bilateral balanced occlusion is provided. However, comparisons between radiographic techniques and clinical procedures are lacking. PurposeThe purpose of this clinical study was to investigate the effects of cone beam computed tomography (CBCT) and Arcus digma II on horizontal condylar inclination and bilateral balanced occlusion. Material and methodsTwelve completely edentulous individuals were provided with complete dentures with teeth in bilateral balanced occlusion. The horizontal condylar angle was measured using CBCT and the Arcus digma II with a 6-mm mandibular protrusion. The CBCT had a real-time 3D image, and the Arcus digma II method recorded mandibular movement using electronic sensors. To evaluate the clinical performance, the horizontal condylar angle was measured using the 2 methods and applied to the semi-adjustable articulator to evaluate the balanced occlusion. The Shapiro-Wilk test was used to assess normality, and a paired t test was used to assess the normally distributed data (α=.05). ResultsThe horizontal condylar guidance angle values for both sides of Arcus digma II were significantly higher than from CBCT (P<.05). No difference was found in the clinical performance of balanced occlusion of complete dentures in the 2 methods. ConclusionsThe Arcus digma II method yielded higher horizontal condylar angle measurements than from CBCT. However, no significant difference was found between Arcus digma II and CBCT in terms of the effect on balanced occlusion. Arcus digma II appears to be a reliable technique for measuring the horizontal condylar angle, similar to CBCT, and can be used as an alternative method.

Assessment of Prosthodontic Status and Treatment Needs of Patients Visiting Dental Institutions of Punjab.

This study was conducted to assess the prosthodontic status and treatment needs of patients visiting dental institutions of a known population. This study comprised a total of 100 participants. The research excluded patients who did not have any prosthodontic appliances or who had dental crowns (no missing teeth). The subjects involved in the study had dental bridges, dentures, removable partial dentures, or a combination of the two. Subjects in the research were asked to tell their education, oral hygiene routines, and dentist visit behaviors. The data collected was utilized to determine the association between the variables and prosthodontics status. A thorough clinical examination of these subjects was done. The data had been analyzed using the statistical program SPSS 13. The analyses were carried out using Chi-square tests and the appropriate C-coefficient. In this study, there were 50 males and 50 females. Out of 100 subjects, 45 subjects were found to be completely edentulous without any prosthodontic appliance. Complete dentures were noticed in 11 subjects, removable dentures in 29 subjects, and fixed appliances in 15 subjects. This survey presented that most of the subjects were completely edentulous without any prosthetic appliance. Examination of such subjects must be done on a regular basis and an appropriate treatment plan must be constructed for the well-being of these patients.

Clinical evaluation on the use of a new accessory device for Fox plane.

Evaluate the assimilation capacity and ease of handling of the Fox plane accessory by dentistry students, through a questionnaire about the experience in using this device compared to the conventional one. Its intention is to minimize possible interpretation errors and challenges that the traditional method determines. After approval by the Research Ethics Committee, registration at Sistema Nacional de Informações sobre Ética em Pesquisa/National Information System on Research Ethics (SISNEP) and signing of the free and informed consent form, 51 undergraduate students treating patients in need of complete dentures at Instituto de Ciência e Tecnologia/Institute of Science and Technology (ICT) Unesp in São José dos Campos completed a questionnaire to evaluate the technical ease of use and provider acceptance. The obtained data were submitted to statistical analysis, evaluating technical ease and acceptance by operators. The results were analyzed using descriptive and inferential statistics using the Jamovi 2.2.5 software. From the responses, the frequency was obtained for each question in the questionnaire, then the weighted mean was calculated, average rating and percentage. With the results of these analyses it was possible to measure the level of satisfaction of the participants in relation to the use of the device. It was concluded that most students have difficulty using the conventional Fox plane and that the accessory facilitated the process of determining the superior orientation plane, and its ease of use.

About the retromolar pad - its particularities and role in the stability and retention of the classic complete denture

Aim. This paper aims to bring back into focus the area of the retromolar pad as an important element for the support area and for achieving an effective marginal seal in case of completely edentulous mandible. Material and methods. 24 cases of complete mandibular edentation were analyzed and the characteristics of the retromolar pad were followed. Analyzing the appearance of the retromolar pad, an attempt was made to classify them into the classes proposed by J. Lejoyeux. The clinical implications of various aspects of this area were monitored. Results. In patients with the retromolar pad in the last three classes, difficulties were encountered in adapting the individual tray and during the functional impression; in cases with advanced resorption of the alveolar ridge and unfavorable retromolar pad, a poor marginal seal was obtained. Conclusions. From the analyzed cases, it was reconfirmed that in an old complete mandibular edentation, the retromolar pad can take an oblique or vertical position. Such a situation becomes unfavorable for the retention of the complete denture, for the marginal seal. Knowing the particularities of the completely edentulous prosthetic field and the clinical stages is essential for maintaining denture stability.

Novel antimicrobial applications of copper oxide nanoparticles after combination with tissue conditioner used in complete prostheses

BackgroundTissue conditioners are used for treating and improving the tissues supporting complete dentures. On the other hand, recent advances in nanotechnology have revolutionized various fields of science, including dentistry. The present study aimed to investigate novel antimicrobial applications of copper oxide nanoparticle-based tissue conditioner used in complete prostheses.MethodsThe present experimental study included 126 tissue conditioner samples with different concentrations of copper oxide nanoparticles (20%, 10%, 5%, 2.5%, 1.25%, 0.625%, and 0% w/w). The samples were incubated with Enterococcus faecalis, Pseudomonas aeruginosa, and Candida albicans in 24-well plates for 24 h. Then, samples from the wells were re-incubated for 24 h, and the microorganisms were counted.ResultsThe culture media containing E. faecalis and P. aeruginosa showed significantly different growth between different nanoparticle concentrations following 24 h (P < 0.001), showing a reduction in bacterial growth with increased nanoparticle concentration. Both bacteria did not show any growth at the 20% concentration. However, C. albicans showed significant differences in growth between different nanoparticle concentrations following 48 h (P < 0.001), showing a reduction in growth with increased nanoparticle concentration. Also, the least growth was observed at the 20% concentration.ConclusionsIn conclusion, the CuO nanoparticles were prepared using a green synthesis methon in the suitable sizes. Moreover, the tissue conditioners containing CuO nanoparticles showed acceptable antimicrobial properties against E. faecalis, P. aeruginosa, and C. albicans.

Stackable Guide and Immediate Full Arch Loading: A Retrospective Cohort Study of 43 Edentulous Arches-The STAGE Study.

As the population gets older, the prevalence of complete or partial tooth loss is increasing, significantly impacting people's quality of life. Scientific research demonstrates that implant-fixed complete dentures offer high levels of satisfaction. In certain cases, tooth loss can lead to significant bone atrophy, necessitating pre-implant bone reconstruction. We conducted a retrospective cohort study involving 43 arches, including or not bone grafts, rehabilitated using a stackable guided approach, which included an immediate loading protocol. The primary outcome measure was the survival rate of the implant at 4 months. The digital workflow helps the design of the provisional prothesis before the implant surgery, which will be loaded immediately after the implant's placement. The stacked guides integrate both surgical and prosthetic considerations into a digital workflow. A total of 284 implants were placed. After a 4-month follow-up period, 10 implants (3.5%) exhibited no osseointegration and were subsequently replaced, resulting in an overall success rate of 96.5%. After 1 year of follow-up, a prosthetic success rate of 100% was observed, with all patients being able to progress to the stages for the permanent fixed dentures. Our findings support the use of this protocol for all patients, whether they require bone grafts or not. However, a long-term follow-up is essential for a comprehensive evaluation of these treatment outcomes.

SURFACE COLONIZATION OF CANDIDA SPP. IN CONVENTIONAL AND DOUBLE-LAYER COMPLETE DENTURES - A PILOT STUDY

Background: The scientific interest in dominant Candida species colonizing the surface of conventional and double-layer dentures (D-LCDs) is still topical. Numerous studies are comparing fungal colonization in both types of removable dentures. Aim: Performing a comparative analysis of the colonization of Candida spp. on the dentures surfaces of the conventional (CCDs) and the double-layer dentures (soft-lined) complete dentures (D-LCDs) over six months, placing them under the same intraoral in vivo conditions. Methods: For isolating Candida spp., specimens were obtained from inner denture surfaces using two sterile swabs, one for the upper complete denture (n=28) and one for the lower complete denture (n=28). The culture-based Candida detection method with CHROM agar was used to identify Candida species. Results: In the third month after dentures delivery C. Albicans is the predominant Candida spp. found on both types of complete dentures surface and isolated in 46 % of the patients with conventional complete dentures and 43 % with double-layer dentures (p&gt;0.05). In the sixth month of the finished prosthetic treatment, combinations of C. Albicans and non-albicans Candida, predominantly C. Tropicalis, C. Glabrata and C. Parapsilosis, were found in 43 % of D-LCDs and 45 % of CCDs (p&gt;0.05). Conclusion: There was no difference in colonization based on the different materials used for denture fabrication. However, there is a significant proportional change for all studied Candida spp. over the period (3-6 months after delivery), irrespective of the denture material used.

3D-printed CAD/CAM complete dentures – Case report

Dentures are used to restore missing teeth and are traditionally fabricated using the lostwax technique. The flasking process is arduous, time-consuming, error-prone, and requires a skilled technician. The development of 3D printing technology has made rapid prototyping of dentures more feasible. This case report describes the functional rehabilitation of a completely edentulous patient with complete dentures by a manufacturer-independent workflow with conventional clinical steps combined with computer-aided design, computer-aided manufacturing (CAD/CAM), and 3D printing technology. The result was 3D-printed complete dentures that were fully adapted, economical, and well-accepted by the patient.

Bonding Efficiency between Artificial Teeth and Denture Base in CAD/CAM and Conventional Complete Removable Dentures.

A common challenge encountered with both traditional and digitally produced dentures involves the extraction of artificial teeth from the denture base. This narrative review seeks to present an updated perspective on the adherence of synthetic teeth for denture base materials, employing diverse methods. Dental technicians often employ chemical approaches and mechanical techniques (including abrasion, laser treatment, and abrasive blasting) to augment the retention of denture teeth. However, the efficacy of these treatments remains uncertain. In certain instances, specific combinations of Denture Base Resin (DBR) materials and artificial teeth exhibit improved performance in conventional heat-cured dentures following these treatments. The primary reasons for failure are attributed to material incompatibility and inadequate copolymerization. As new denture fabrication techniques and materials continue to emerge, further research is imperative to identify optimal tooth-DBR combinations. Notably, 3D-printed tooth-DBR combinations have demonstrated reduced bond strength and less favorable failure patterns, while utilizing milled and traditional combinations appears to be a more prudent choice until advancements in additive manufacturing enhance the reliability of 3D-printing methods.

Oral dentures and quality of life related to Parkinson disease: An integrative review

Parkinson's disease (PD) is a neurodegenerative condition affecting millions of elderly people, causing tooth loss and difficulties in oral hygiene. These complications increase the incidence of cavities and periodontal diseases. Oral rehabilitation with dentures is crucial to restore masticatory function and improve the quality of life for these patients. The objective of this study is to evaluate the impact of oral rehabilitation on the quality of life of edentulous older patients with Parkinson's. An integrative review was prepared following the recommendations of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA), based on the research's guiding question: "What is the impact of rehabilitation with complete dentures on the quality of life of older patients with Parkinson's?". The PICO search strategy was set up (P=patient, I=intervention, C=control and O =outcome) and the descriptors that guided the search were obtained from the health sciences descriptors of the virtual health library (DeCSbvs) and the headings of medical subjects (MeSH Pubmed). We used the Pubmed/Medline, BVS, CINAHL, EMBASE, SCOPUS and Web of Science databases, in the last 10 years (between June 2012 and June 2022), presenting title and abstract in English. Used the selection process of the articles occurred according to the three steps of the Prisma Flow Diagram: Step 1: Articles selected through critical and reflective reading by title and summary; Step 2: Articles read in full and included in the review only related to the research theme and Step 3: Selection of articles according to the pre-established inclusion and exclusion criteria. As results, from 42 initial studies were included two studies. Conclusions: there is a lack of studies in the field of quality of life related to dentures in patients with Parkinson disease.

Knowledge and Attitude to Quality of Life Elderly Complete Denture in New Normal

Background: Knowledge and attitudes of the community, especially older people who wear complete dentures, can influence the quality of life. Quality of life in older people with tooth loss can be treated by making dentures, which are generally complete dentures. Objective: This study determined the relationship between knowledge and attitudes towards the quality of life of elderly complete denture users during the new normal period. This type of research is an analytical survey. Methods: The research method is analytic survey research using a cross-sectional design. The research sample used a purposive sampling technique with a sample size of elderly patients using complete dentures, totaling 36 respondents at the Baiturrahmah General Hospital during the new normal period in January-December 2022. Univariate data analysis processing was presented as a frequency distribution and bivariate data analysis using the Spearman correlation test. Results: Significant (p0.05) in the good knowledge category for 20 (55.6%) respondents, positive attitude category for 27 (75%) respondents, and high quality of life category for 18 (50%) respondents. Conclusion: Knowledge of Quality of life 0.01 (p0.05) and attitudes towards quality of life 0.05 (p0.05).

Exploring lived experiences on the usage of removable complete dentures among edentulous patients attending Makerere University Dental Hospital, Kampala, Uganda

BackgroundEdentulism remains a major disability worldwide, especially among the elderly population, although the prevalence of complete edentulism has declined over the last decades. In Uganda, the prevalence of edentulism in people aged 20 years and above is 1.8%. The therapy for edentulous patients can be realized through the use of conventional removable complete dentures, implant-supported prostheses, and computer-aided design and computer-aided manufacturing (CADCAM), however, the provision of removable complete dentures continues to be the predominant rehabilitation for edentulous patients. However, no published study has explored the lived experiences with removable complete dentures among the Ugandan population. The aim of the present study was to explore patients’ lived experiences on the usage of removable complete dentures among Ugandan edentulous patients attending Makerere University Dental Hospital.MethodsThis was a qualitative study approach using purposive sampling. Fifteen (15) respondents were selected across social demographics. Interviews were recorded and transcribed and themes were generated to draw a deeper meaning to the usage of removable complete dentures. A qualitative statistical package, Atlas Ti software was used to generate themes from the interviews followed by an interpretation of the generated data and the results were presented as text and in a table.ResultsThe reported key positive experiences due to removable complete denture rehabilitation were the improvement in speech, eating ability, regaining good facial appearance, better oral hygiene management, self-esteem and confidence to smile in public, and a feeling of completeness. However, respondents complained of pain and discomfort due to the looseness of dentures, inability to eat certain foods, and regular cleaning of dentures. The respondents did not go through proper informed consent processes before getting removable complete dentures.ConclusionThe study found that patients were satisfied with their removable complete dentures rehabilitation due to the positive experiences registered, such as the ability to eat and talk well, and restoration of self-esteem, all of which improved their quality of life. However, they experience pain and discomfort due to the looseness of dentures.

Impact of Denture Use on Oral Health-Related Quality of Life in Yemeni Patients: A Cross-Sectional Analysis.

BACKGROUND We used the 14-item Oral Health Impact Profile-14 (OHIP-14) questionnaire to evaluate the association between sociodemographic variables and oral health-related quality of life in 241 wearers of removable partial or complete dentures attending a single center in Yemen. MATERIAL AND METHODS A total of 241 partial dentures (PD) and complete dentures (CD) wearers were enrolled from the Department of Prosthodontics at the Faculty of Dentistry, Sana'a University, and the University of Science and Technology. Data were collected before the commencement of denture wearing and after 3-6 months of denture use. The questionnaire consisted of sociodemographic information and denture type, and another for the OHIP to assess oral health-related quality of life (OHRQoL), oral health impact profile scale comprises 7 subscales, each evaluating different aspects of oral health and functionality. Descriptive statistics were calculated for participants. Independent t tests were performed to compare different patient groups, focusing on PD and CD wearers. Paired-sample t tests were used to examine changes within patient groups before and after removable denture use. RESULTS Among all participants, 67.6% were male, wearers of CDs were 74.6% male, PDs were 58.3%, and was consistent for CD (71.0%) and PD (72.8%) wearers. The wearing prostheses significantly impacted the OHRQoL of patients using both PDs and CDs (P<0.01). Among CD wearers, 4 of these subscales (3-6) were statistically significant, but the handicaps subscale showed evident reductions in physical pain after treatment among PD wearers. CONCLUSIONS Wearing dentures positively affects the OHRQoL of patients, influencing various aspects of their health, including functional, physical, psychological, and social well-being.