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PubMed1980

Modified maxillary submucosal vestibuloplasty.

The literature during the past few decades is replete with methods to improve denture retention and stability. The maxillary submucosal vestibuloplasty is a relatively simple, yet effective method of increasing the functional alveolar ridge with a minimum of postoperative morbidity. This article presents a modification of the maxillary submucosal vestibuloplasty originally described by OBWEGESER. The procedure is indicated for edentulous patients who experience unsatisfactory denture retention and stability due to muscle and mucosal attachments located near the maxillary alveolar crest, have adequate bone height, and healthy vestibular mucosa. The modifications presented herein provide improved surgical exposure, improved vestibular depth, and a comfortable, hygienic and esthetic removable interim prosthesis.

Denture Design↗
PubMed1991

Comparison of patients' views and dentists' evaluations 5 years after complete denture treatment.

This study describes a comparison of patients' views of their dentures and dentists' technical evaluations 5 yr after complete denture treatment. Of the original sample (n = 139) a test group of 92 patients remained available for the actual study 5 yr after treatment. Firstly, the patients filled in a questionnaire regarding their complaints of and (dis)satisfaction with dentures. Secondly, they were examined independently by two experienced dentists in order to evaluate their dentures. Finally, after considering the answers to the questions in the questionnaire and their own dentures' evaluation the dentists proposed a therapy. It was found that patients and dentists agree on assessments of denture retention, but do not agree on assessment of denture aesthetical aspects. Furthermore, it appeared that generally more therapy was rendered by the dentists than could be expected on the basis of their evaluations and the patients' views.

Attitude of Health Personnel↗
PubMed2004

Changes in temporomandibular disorders after treatment with new complete dentures.

A total of 250 edentulous patients (118 non-denture and 132 denture wearing) awaiting treatment for new complete dentures were examined for signs and symptoms of temporomandibular disorders. Signs and symptoms of temporomandibular disorder (TMD) were evaluated before prosthetic treatment, 3 months and 3 years after denture insertion by means Helkimo's Anamnestic and Clinical Dysfunction Indices. Before treatment began, patients were observed to have a low prevalence of signs and symptoms of TMD. This prevalence decreased, but was not statistically significant, in the 3 months and 3 years after denture insertion. No statistically significant correlations were found between signs and symptoms of TMD and denture retention, stability, occlusal errors, freeway space, age of present denture, or number of sets of dentures.

Adult↗
PubMed1991

A comparison of mandibular denture base extension in conventional and implant-retained dentures.

A border outline for mandibular implant-retained dentures is described. The lingual extension of the impression is greatly reduced compared with a conventional mandibular denture. Because of the implant attachment, the shortened border is more comfortable and does not compromise denture retention. Improper implant position is also discussed with respect to denture extension.

Dental Implants↗
PubMed1979

Preprosthetic vestibular sulcus extension by the operation of Edlan and Mejchar. A 2-year follow-up study-I.

Nineteen patients suffering from denture retention problems and/or pain on function due to atrophy of the mandibular alveolar ridge were operated on by the method of EDLAN & MEJCHAR. All patients felt an improvement of denture retention. Three out of seven still had pain on function after the operation. An average of 80% of the surgically created sulcus extension remained after 2 years.

Adolescent↗
PubMed1994

Practical implant dentistry--the mandibular removable overdenture prosthesis.

The fully edentulous mandible presents functional, esthetic, and psychological challenges for the patient and the dentist. The mandibular overdenture supported by endosseous implants can provide a superior treatment modality, overcoming many of the difficulties inherent in the conventional denture. Advantages cited are increased denture retention, improved chewing efficiency, maintenance of bone height, replacement of lost anatomy, increased denture stability, reduction of soft tissue coverage and extension of the prosthesis, and easy access for hygiene maintenance. The major disadvantage rests with the patient's intolerance of a removable prosthetic design.

Dental Implantation, Endosseous↗
PubMed1994

Effect of denture adhesive on the retention and stability of maxillary dentures.

This study used quantitative methods to measure the effects of a denture adhesive on the retention and stability of the maxillary denture. Denture movements were measured on 20 patients during standardized chewing, swallowing, and speaking activities, first with no adhesive, and then at 0, 2, 4, 6, and 8 hours after application of an over-the-counter cream adhesive. The major findings were that the denture adhesive produced a statistically significant improvement in the retention and stability of the maxillary denture during the various chewing, swallowing, and speaking activities, for up to 8 hours; there were no statistically significant differences in improvement between a poorly fitting and well-fitting denture; and patients were able to produce significantly greater levels of incisal bite force with the use of the adhesive.

Adhesives↗
PubMed2004

Evaluation of unstimulated flow rates of whole and palatal saliva in healthy patients wearing complete dentures and in patients with Sjogren's syndrome.

STATEMENT OF PROBLEM: The palate and upper lip are the regions of oral mucosa covered with the least amount of saliva. These areas are important for maxillary denture retention and stability. Thus, patients with xerostomia or hyposalivation may have problems with the stability of maxillary complete dentures. PURPOSE: The purpose of this study was to compare the unstimulated whole saliva (UWS) and palatal saliva (PS) flow rates of healthy patients wearing complete dentures and patients with Sjogren's syndrome (SS) and to determine whether xerostomia or hyposalivation has a negative influence on maxillary complete denture stability. A further aim was to determine the influence of new complete dentures on UWS and PS flow rates in healthy individuals. MATERIAL AND METHODS: Thirty-five complete denture wearers, 24 healthy individuals (controls) and 11 patients who fulfilled the diagnostic criteria for primary Sjogren's syndrome (as proposed by the European Community Study Group) were investigated. All participants were questioned about possible subjective oral complaints (xerostomia or instability of the dentures) through use of a standardized questionnaire. In the first part of the study, UWS and PS flow rates of the healthy subjects (controls) and of the SS patients were measured at the initial visit. The flow rate of UWS (mL/min) was collected by the "spitting" method; saliva was collected into preweighed vessels for 5 minutes while subjects were seated in an upright position. Patients were asked to refrain from smoking, eating, and drinking for 2 hours prior to the test session, to avoid swallowing, and to make as few movements as possible during the procedure. The PS flow rate (microL/min/cm2) was measured using previously weighed filter paper discs placed bilaterally in the region of the maxillary second molars, 15 mm palatally from the edentulous ridge, for 30 seconds. The measuring vessels and paper discs were weighed before and after each collection. In the second part of the study, new complete dentures were fabricated for healthy patients. Flow rates of UWS and PS were measured 7 days after the insertion to compare data with prefabrication values. Mann-Whitney and Wilcoxon rank sum tests and chi-square test were used to analyze the data (alpha=.05). RESULTS: The UWS flow rates were significantly lower in SS patients compared to healthy controls (0.36 +/- 0.33 vs 0.09 +/- 0.11 mL/min, P<.05), yet the PS flow rate for both groups was not significantly different. Although every SS patient had xerostomia, and 8 out of 11 had hyposalivation, no patient complained about denture instability. Neither UWS flow rate (0.36 +/- 0.33 mL/min and 0.39 +/- 0.35 mL/min) nor PS flow rate (1.66 +/- 0.99 microL/cm2/min and 1.86 +/- 0.45 microL/cm2/min) was different from the preinsertion values after 1 week of new denture insertion in healthy patients. CONCLUSION: Palatal mucous saliva may help stabilize the maxillary complete denture in patients with hyposalivation. The results suggest that neither UWS or PS flow rate are influenced by the placement of new dentures in complete denture wearers.

Aged↗
PubMed1984

Retention of complete maxillary dentures as a result of changes in design.

The influence of complete maxillary denture design on retention was studied under clinical conditions simulating chewing. Five persons with an edentulous maxilla and a natural dentition of at least 10 teeth in the mandible participated. Retention was measured with a miniature bite force sensor. The occlusal load required to provoke denture dislodgement was recorded. The general principles of denture design were as follows: the bicuspids and molars were set on top of the residual ridge; the thickness of the denture borders was determined functionally; and the palate was covered to the vibration line, without attempts at border compressions. The details that were changed to evaluate their influence on denture retention were as follows: the point of attack of the dislodgement-provoking load alternated between three distinct pits, situated 2 mm apart in the buccopalatal direction on the occlusal surface of the first right bicuspid; the vestibular denture border on the left side was reduced stepwise to 75%, 50%, and 25% of its original thickness; and the distal extension of the palatal denture border was shortened stepwise (2 + 2 mm, as measured in the midline). Measurements pertaining to one specific problem were carried out within a period of 2 h. The results confirmed the concepts that lingualized occlusal contact, functionally determined filling in of the vestibular sulcus, and full palatal coverage to the vibration line all have a positive influence on the retention of complete maxillary dentures.

Aged↗
PubMed1989

Evaluation of satisfaction of denture wearers with the transmandibular implant.

121 edentulous patients with severe resorption of the mandible (average 10.0 mm, measured in frontal area) who received a transmandibular implant were evaluated from 2 to 8 years after insertion of the implant. Patients' opinion about the implant and denture function after insertion were evaluated using a questionnaire. The results showed that most of the patients (91%) were satisfied because of improved denture function. There were few complaints about looseness, pain and difficulty with chewing. 96% of the patients considered their implant as being a valuable adjunct to denture retention.

Adult↗
PubMedDate not supplied

[Technique and results of a one-stage procedure combining endosseous implantation (TPS) and classical preprosthetic surgery in the mandible].

Relative ridge augmentation procedures often provide a limited improvement in denture retention, due to advanced resorption of the alveolar ridge and loss of vertical bone height. The alternative treatment, i.e. integration of endosseous implants, leaves the mobile soft tissues uncapable of bearing a denture; this requires additional mucosal procedures. To avoid multiple operations we have combined the integration of frontal endosseous implants with the classical relative ridge augmentation procedure in one stage. While implantation, on the one hand, improves multidimensional denture retention, total sulcoplasty with split skin and mucosal grafts, on the other, provides a firm and strong covering of the ridge and a wider soft tissue area for denture support.

Alveolar Ridge Augmentation↗
PubMedDate not supplied

Psychomotor patient training to enhance retention of complete dentures.

A training device is used in conjunction with an exercise program to teach muscle control for retention of a mandibular denture. The training instrument consists of a shellac record base connected with string to an extraoral spring balance scale. Instructions are given in the use of the tongue, lip, and cheek muscles for denture retention. The patient is then asked to displace the seated record base by pulling on the scale. Higher measurements on the scale indicate increased resistance to displacement of the denture base. The process is repeated and increased resistance is obtained. There appears to be a substantial positive transfer of skills derived from use of the training device to successful function with the completed prosthesis.

Dental Care↗
PubMed1976

A silicone rubber attachment for primary retention of partial dentures.

A technique for primary retention of removable partial dentures has been described. A soft-tissue-borne restoration provides an increase in primary retention without an increase in forces to the abutment teeth, and the restoration requires a minimal outlay of time and money.

Denture Design↗
PubMed2001

Assessment of whole saliva flow rate in denture wearing patients.

It has been suggested that salivary flow rate decreases with age. As is known, the presence of a thin salivary film layer is essential for the comfort of the mucosa beneath a denture base and for denture retention. The purpose of this study was to determine the flow rates, viscosity and the pH of resting and stimulated whole saliva before and after prosthetic treatment in complete denture wearing patients. Saliva was collected under clinical conditions between 08.00 and 10.00 hours. The flow rates of whole saliva were measured at three stages: (i) resting and stimulated saliva before prosthetic treatment; (ii) immediately after the first wearing of the complete denture; and (iii) resting and stimulated saliva after 2 or 3 months of wearing the complete denture. Saliva production was stimulated by chewing paraffin wax. Flow rate was calculated as collected volume/collection time. It was found that there was a significant difference between resting and stimulated whole salivary flow rates before and after complete denture wearing.

Adult↗
PubMed1991

Tongue control of upper complete dentures: a clinical hint.

The role of the tongue in aiding upper denture retention is well recognised by clinicians, but this information is not always related to the patient. This paper describes a simple method of diagnosing the problem and training patients to control their maxillary denture during function, particularly when chewing food.

Denture Retention↗