Retention Of Maxillary Complete Denture Research Articles

Retention and Patient Satisfaction of Conventional Over Simplified Non-Balanced Maxillary Removable Complete Dentures.

Insufficient evidence is available in quantifying the retention between simplified and conventional non-balanced dentures. The aim of the study was to quantify and compare the maxillary denture retention and patient satisfaction between conventional and simplified removable non-balanced complete dentures. This randomized clinical trial recruited 44 patients (n=22) with definitive criteria. Simplified and conventional non-balanced complete dentures were fabricated for the intervention groups. The denture retention of maxillary complete dentures was assessed with a dynamometer and patient satisfaction with a visual analogue scale. The mean retention of maxillary denture and satisfaction were recorded at 0-,3-, and 6 - month intervals. The data were statistically analyzed. (α=.05). The mean ±SD of retention for conventional denture at 0, 3, and 6 months by dynamometer ranged from 122 ± 1.64 N to 121 ± 1.57 N and 111 ±1.45N to 110±1.97 N for the simplified denture. The mean ±SD of visual analogue score varied between 9.45±0.35 to 7.19± 0.69 for conventional dentures and 8.00 ±1.39 to 6.81±0.82 for simplified dentures. The repeated ANOVA, t-test and post-hoc Bonferroni revealed statistically significant differences between the two types of denture. (P⟨.05) Conclusion: Numerical retention and satisfaction were higher in conventional non-balanced dentures than simplified dentures.

A Randomised Controlled Trial of Postoperative Sensitivity after Class II Restoration with Bulk-Fill vs Conventional Composites.

Bulk-fill composites may simplify posterior restorations, saving time and reducing technical complexity. Post-operative sensitivity is a risk of posterior composites; bulk-fill composites could mitigate this. This single centre, double-blinded, parallel groups randomised controlled trial compared postoperative sensitivity following restoration of class II carious lesions with bulk-fill or conventional, layered composite. there will be no difference in post-operative sensitivity between the two materials. Participants requiring class II restoration of posterior teeth were randomised to bulk-fill (FU) (Coltene Fill-UpTM) or conventional, layered (BE) (Coltene Brilliant Everglow) composite. Allocation was concealed during cavity preparation. Only the operating dentist knew allocation. The outcome was 24 h post-operative sensitivity. 41 patients were randomised (20/group). Two patients from FU group were excluded from analysis (factors unrelated to intervention). There was no difference in postoperative sensitivity at 24 h nor any time point. Only participant age and baseline sensitivity scores significantly impacted post-operative sensitivity. One restoration debonded in FU group at 10 days, with no other adverse effects. No difference in time taken to place restorations was seen. Within the study's limitations, post-operative sensitivity after class II posterior restorations was no different in bulk-fill restorations compared with conventional, incrementally cured composite.

Effect of Using Two Different Techniques of Denture Base Fabrication on Retention of Maxillary Complete Denture: An in Vivo Comparative Study

Effect of Using Two Different Techniques of Denture Base Fabrication on Retention of Maxillary Complete Denture: An in Vivo Comparative Study

Improving the Retention of Maxillary Complete Denture: A Case Report

Complete dentures play an essential role in restoring oral function and improving the quality of life for individuals who have missing all their normal teeth. One of the key factors determining the success of complete dentures is their retention, which refers to the ability of dentures to stay securely in place during normal oral function. Adequate retention is essential for proper speech, mastication and overall comfort of the denture wearer. The study aimed to improve the retention of complete dentures through three different approaches: spacer, posterior palatal seal area, and undercut area. Three dentures were fabricated using the same steps, with variations in certain steps based on the retention technique being employed. The study showed that all three dentures had improved retention compared to standard complete dentures. The dentures that included the posterior palatal seal area and spacer demonstrated higher retention than the denture that employed the undercut technique. It is worth noting that the patient did not find the denture with the undercut technique satisfactorily.

Determination of the Frequency of Various Anatomical Forms of the Hard Palate for Complete Denture Fabrication

OBJECTIVE: To determine the frequency of patients with various anatomical forms of the hard palate for complete denture fabrication and to compare the mean distortion in heat cure denture base polymer in millimetres in different hard palate forms. METHODOLOGY: Informed consent was taken from total of seventy six patients and divided into low and medium hard palate forms. Dental casts were prepared from alginate impression and poured in type III stone and reference point R was marked on the deepest part of the posterior palatal seal area at the junction of hard and soft palate on each cast. After curing, the cast along with the cured denture base was retrieved from the flask. After 48h of curing cycle the distortion was measured in millimetres from R to R' via traveling microscope. RESULTS: Among seventy six participants the frequency of low palate forms was 45 (59.2%) and medium palate forms was 31 (40.8%). For each sample three readings were taken R1, R2 and R3. The mean distortion measured in low hard palate form was 0.52mm with a standard deviation of 0.18, the mean distortion measured in medium hard palate form was 0.76mm with a standard deviation of 0.27, which were clinically significant with a p-value of 0.0001. CONCLUSION: The hard palate forms has direct influence on retention of maxillary complete denture in posterior palatal area. KEY WORDS: Heat Cure denture base, distortion in hard palate forms, dimensional changes in heat cure, hard palate anatomy and denture bases

Relation of Vibrating Line to Location of Fovea Palatinae in Local Population

OBJECTIVE: The objective of this study was to assess the location of foveae palatinae in relation to vibrating line for developing posterior palatal seal to enhance retention of maxillary complete dentures. Retention of a complete denture is the major factor to resist the forces of dislodgement along the path of insertion. In complete denture fabrication, fovea palatinae is the guideline for the posterior extension in the maxilla. Fovea palatinae mucous gland secretion helps in the retention by forming a thin layer within the maxillary complete denture. METHODOLOGY: The study was conducted in Sharif College of Dentistry in Lahore, Pakistan on a sample size of two hundred and fifty dentate, partially dentate and edentate patients with different age groups. Clinical examination of the maxilla was conducted for assessment of the vibrating line, whether it was at, anterior to or posterior to the fovea palatinae. The researcher used an indelible pencil to mark the ah line i.e vibrating line and its distance with fovea palatinae was measured. RESULTS: Results were concluded using SPSS Version 23. The fovea palatinae were mostly found to be located at 1.68 mm±1.11 anterior to the vibrating line. Thus, the dentists should assess this distance for the posterior extension of the maxillary denture. CONCLUSION: Fovea palatinae location in relation to vibrating line is an important landmark for posterior palatal seal in a complete denture. In the majority of cases, fovea palatinae were located 1.68 mm±1.11 anterior to the vibrating line. KEYWORDS: Foveae Palatinae, Vibrating line, Retention, Posterior palatal seal.

In Vivo Evaluation Study of Three Denture Adhesives on Retention of Maxillary Complete Denture

In Vivo Evaluation Study of Three Denture Adhesives on Retention of Maxillary Complete Denture

A Comparative Evaluation for Retention of Maxillary Complete Denture Using Different Commercially Available Denture Adhesives: An In Vivo Study

A Comparative Evaluation for Retention of Maxillary Complete Denture Using Different Commercially Available Denture Adhesives: An In Vivo Study

A comparative analysis of salivary factors and maxillary denture retention in different arch forms: An in vivo study.

Aims:This study aims to find the effect of change in different salivary factors before and after complete denture insertion and to measure the maxillary denture retention in different arch forms.Materials and Methods:Thirty completely edentulous individuals (10 each of square, tapered, and ovoid arch form of maxilla) belonging to the age group of 40–70 years were selected. Salivary factors (flow, density, pH, viscosity, and total protein) were evaluated before and after denture insertion. Retention of maxillary denture was measured in all the different arch forms.Statistical Analysis:Student's independent sample's t-test was applied. The correlation was analyzed by Pearson's correlation analysis.Results:While mean flow rate and pH of saliva increased, mean viscosity, total protein, and density of saliva decreased after maxillary complete denture insertion. A positive correlation was found between retention and total maxillary basal surface area. Retention value was found to be greatest in square type and least in tapered type.Conclusions:Complete denture acts as a mechanical stimulant thus increasing flow rate and pH immediately after complete denture insertion. Density, total protein, and viscosity of saliva decreased after complete denture insertion which may be due to increase in water content of saliva. The retention of maxillary complete denture does not seem to depend on the rate of change of the salivary factors, before and after complete denture insertion. Total basal surface area and maxillary denture retention values were highest in square arch form and least in tapered arch form.

Association between Clinical and Subjective Analysis of Denture Adhesives on Retention of Maxillary Complete Dentures: A Comparative Study

Association between Clinical and Subjective Analysis of Denture Adhesives on Retention of Maxillary Complete Dentures: A Comparative Study

Effect of different denture adhesives on retention of complete dentures: an in vivo study

The increase in prevalence of tooth loss with the effect of population aging produces the growing need for complete dentures. The success and acceptance of complete dentures by the patient depends on sufficient retention and stability. Therefore, denture adhesives are regularly used by denture wearers to improve the function of complete denture. We evaluated the effect of three different denture adhesives (Corega, Protefix, Fittydent) on the retention of maxillary complete denture (MCD) using with digital dynamometer (DD). For this purpose, denture adhesives were applied on MCDs of 30 participants. After chewing procedure, the force was applied at 45° to the palatal surface of denture by DD. Dislodgement force was recorded by means of Newton. There were four measurements on each patient including; group of control: Group C; Group CR: Corega; Group F: Fittydent; Group P: Protefix. The result of the study was statistically evaluated by using analysis of variance (ANOVA) and Tukey HSD test. Statistics of ANOVA showed a significant difference among all the four groups (p = 0.00, <0.05). Tukey HSD test indicated that there was a statistical difference between Group F and the other groups, but there was not a significant difference between the other groups. The highest adhesive strength value was observed in group F, the lowest in group C. Use of denture adhesives improved the retentive strength of complete denture.

Posterior Palatal Seal Area Established in Conventional and CAD/CAM Fabricated Complete Denture Techniques: Clinical Case Study

Statement of problem: Deformation of heat-polymerized PMMA denture bases during its fabrication may affect posterior palatal seal (PPS) of maxillary dentures due to unavoidable dimensional changes such as contraction on cooling and polymerization shrinkage. Overcoming of this shrinkage encountered in conventionally processed completed dentures may improve the fit of the denture base of CAD/CAM processed complete dentures. Clinical studies are lacking in comparing and relating the frictional denture retention due to good border seal for both CAD/CAM processed denture bases and conventionally processed denture bases. Purpose: In this comparative study, retention of maxillary complete denture is evaluated in terms of PPS for both conventional and CAD/CAM processing techniques. This clinical report describes the manufacturing of a removable CAD/CAM complete denture made of high density polymer to enhance the predictability of retention. Material and methods: Vertical dislodging forces were applied to both types of maxillary complete denture bases at a preselected middle location. A specially designed strain gauge force meter was used to dislodge the two different denture bases. Forces dislodging each denture base were recorded and the mean retentive force of the 2 techniques was compared (Wilcoxon Z test). Results: Retention of maxillary CAD/CAM denture base was increased as compared to that of conventionally processed one. A significant difference was noted in vertical pulling force for the CAD/CAM denture base as compared to conventional denture base. Conclusion: Using the CAD/CAM complete denture increased frictional retention and stability and improved its clinical performance due to good base adaptation and border seal. Patient may thereby benefit from this more retentive and more durable denture.

Factors related to patient satisfaction with complete denture therapy.

Except for denture quality, many other factors are related to a patient's satisfaction with complete dentures (CDs). A total of 222 patients with CDs took a part in this study. A questionnaire divided into 3 parts was completed by both the patients and the dentist, independently. The patients rated their dentures using a scale ranging from 1 to 5 (1 = dissatisfaction to 5 = excellent), and a dentist rated the quality of the denture and the denture-bearing area. Patients were mostly satisfied with the quality of their CDs. Only 7.2% of the patients were absolutely not satisfied with their dentures. Patients with a low level of education were more satisfied in general with their aesthetic appearance. Patients with better self-perception of their affective status and quality of life showed higher levels of general satisfaction. Patients with better self-perception of their economic status showed lower levels of satisfaction. Younger patients wearing dentures for the first time, with short periods of being edentulous, and with better quality maxillary denture-bearing areas were more satisfied with the retention of maxillary CDs. In contrast, younger patients with first-time dentures, a short period of being edentulous, and with better quality mandibular denture-bearing areas gave lower ratings to the retention and comfort of wearing mandibular dentures. Level of education, self-perception of affective and economic status, and quality of life are all related to patient satisfaction. However, the quality of dentures shows the strongest correlation with patient satisfaction. Not only the quality of the denture-bearing area but the denture-wearing experience itself seems to be more important in determining patient satisfaction with mandibular CDs.

Salivary secretion and denture retention

Correlations between the retention of complete dentures and flow rates of the palatal and parotid glands were studied in 86 patients. The determination of secretion rates and forces of the forward leverage leading to a dislocation of the dentures showed a narrow correlation between the secretion of palatal glands and the retention of maxillary dentures. The retention of mandibular complete dentures is adversely influenced by the secretion rate of minor salivary glands. However, there is no correlation between the flow rate of parotid saliva and the retention of either denture. In addition, the medicinal stimulation of salivation showed that an increase of mucus secretion induced an improved retention of maxillary complete dentures.

Role of the surface and volume of palatal relief chambers in retention of maxillary complete dentures

Maxillary complete dentures were made with thickened denture bases for 10 patients. The retentive force was measured with a dynamometer. Acrylic resin was then removed with a bur from the mucosal side of the denture base, the progressively enlarging the palatal chamber. Each enlargement was followed by measurement of the surface and volume of the chambers and the retention force of the dentures. The mean force of the denture retention diminished progressively from 57 N to 13.5 N as the chambers enlarged. An analysis of the results showed that the retention of maxillary complete dentures does not depend on the surface of the palatal chambers but is inversely proportionate to their volume.

The role of saliva in retention of maxillary complete dentures

In this study maxillary denture retention was influenced by the salivary volume between the denture base and the mucous membrane. An optimum intervening salivary volume, at which the greatest retention was developed, was also observed. It was observed from determination of electric resistance of palatal mucous membrane that inward and outward flow of intervening saliva was greater in the denture with poor retention than in the one with good retention. Moreover, when the salivary volume between the denture base and mucous membrane was optimum the salivary flow under the denture was minimum.

Clinical study of the retention of maxillary complete dentures with different base materials

Clinical study of the retention of maxillary complete dentures with different base materials