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At least 1,765 records · Page 98Linked to original sources
PubMed2000

Effect of denture adhesive on retention of the mandibular and maxillary dentures during function.

The purpose of this study was to determine the effect of denture adhesive on retention of mandibular and maxillary dentures over a four-hour period. Denture movements were measured using an alternating magnetic field tracking device that determines the position of magnetic receiver coils relative to a transmitter coil positioned over the head. Ten adults with complete maxillary dentures and complete mandibular implant overdentures were enrolled in the study. Specially fabricated mandibular dentures contained a relief area that exposed the implant post which no longer anchored the denture, but now served as an attachment point for a receiver coil that measured mandibular movement. The denture coil was attached lateral to the post coil on a shelf cut into the denture. Mandibular denture movements were recorded as the difference between the mandible movement signal and the mandible + mandibular denture signals. Measurements of denture movements were made at baseline (no adhesive) and at 0, 2, 4 hours post-adhesive application with Fixodent cream for standardized chewing and biting. The MoveTrack signals were recorded on a digital data cassette recorder for subsequent computer analysis. The results of the measurements were analyzed using paired sample t-tests. Specifically, the following comparisons of movement means were made: mandibular vs. maxillary, baseline vs. post-baseline and successive changes (e.g., baseline vs. hour 0, hour 0 vs. hour 2, etc.). Results of these analyses showed that: 1) mandibular denture movements under both adhesive and non-adhesive conditions were significantly greater than maxillary denture movements; 2) the adhesive significantly reduced movement of the maxillary and mandibular dentures during both chewing and biting; and 3) the improvement occurred immediately post-application of the adhesive and was maintained for the four hours of follow-up.

Adhesives↗
PubMed1999

Prospective audit of laparoscopic totally extraperitoneal inguinal hernia repair: a multicenter study of the Swiss Association for Laparoscopic and Thoracoscopic Surgery (SALTC).

BACKGROUND: This article reports the results of a multicenter prospective audit of totally extraperitoneal (TEP) inguinal hernia repair conducted by the Swiss Association for Laparoscopic and Thoracoscopic Surgery (SALTC) from May 1995 to August 1996. METHODS: At 29 Swiss centers 1,605 inguinal hernia repairs were performed in 1,186 patients. Half of the repairs were performed by operators whose experience consisted of fewer than 51 procedures. Patients were followed up for 1 year. RESULTS: Bilateral repairs were performed in 35% of the patients, and 15% of all repairs were for recurrent hernia. Conversion rates to the transabdominal preperitoneal (TAPP) technique and open surgery were 1.8% and 1.6%, respectively. Main postoperative complications were hematoma and urinary retention. At 3 months, seroma was more frequent with slit prosthesis. The recurrence rate was 0.6% at 3 months and 1.6% at 1 year, not depending on the type of implant. The rate for recurrent hernias did not differ from that for primary repairs. CONCLUSIONS: Total extraperitoneal (TEP) repair can be performed with low morbidity and a high level of patient satisfaction. The effects of the learning curve are not to be neglected. The 1-year recurrence rate is 1.6%. Published data on TEP suggest that late recurrences may be less frequent than after open repair.

Female↗
PubMed1986

Retentive characteristics of different magnetic systems for dental applications.

Six magnet-keeper systems were tested to determine the relationship between an air gap and the resulting breakaway force. The maximum retention was obtained when the magnet and keeper were in apposition. However, as the air gap increased in 0.1 mm increments, the breakaway force diminished rapidly initially and, then began to taper off at 0.2 to 0.3 mm. Ideally, the preferred placement of the magnet into the denture is with a carefully controlled system to provide an air gap. Then the magnet is attached with a minimal amount of autopolymerizing acrylic resin.

Denture Design↗
PubMed1988

A four-year clinical evaluation of resin-bonded fixed partial dentures.

A total of 58 resin-bonded fixed partial dentures seated in 47 patients were examined for periods of 2 to 51 months. During the evaluation period, 10 prostheses (17.2%) became dislodged. Six restorations (10.3%) were successfully rebonded and four (6.9%) were remade. Six anterior and four posterior restorations were dislodged. Six mandibular and four maxillary prostheses became debonded. One restoration containing more than one pontic was dislodged.

Acrylic Resins↗
PubMed2006

Inflammatory papillary hyperplasia of the palate: treatment with carbon dioxide laser, followed by restoration with an implant-supported prosthesis.

Inflammatory papillary hyperplasia of the palate is a persistant non-neoplastic lesion that is normally caused by poorly fitting dentures and Candida infection. We describe a case that was managed primarily with topical miconazole, and complete removal of the old acrylic denture. A multidisciplinary approach between surgeon and prosthodontist was used that combined carbon dioxide laser followed by substitution of the old removable denture for a new implant-supported screw retained prosthesis. This avoided direct support of the prosthesis by the palatal mucosa and made oral hygiene easier. The treatment has resulted in complete remission and there has been no recurrence occurred during 3 years of follow-up.

Adult↗
PubMed2005

The impact of conventional and implant supported prostheses on social and sexual activities in edentulous adults Results from a randomized trial 2 months after treatment.

OBJECTIVES: To determine the impact of mandibular two-implant overdentures or conventional complete dentures on leisure and sexual activities. METHODS: One hundred and two subjects, aged 35-65 years, received either mandibular overdentures retained by two implants (IOD; n=54) or new mandibular conventional complete dentures (CD; n=48) in a randomized controlled clinical trial. A Social Impact Questionnaire was used to assess the impact on social and sexual activity including avoiding conversation, refusing invitations, avoiding sport and feeling uneasy when kissing and in sexual relationships, and the looseness of the prostheses during such activities. Ratings were recorded on categorical scales at baseline and 2 months after treatment. Oral health related quality of life was measured with the Oral Health Impact Profile (OHIP). Between and within group comparisons were carried out using regression models. The correlation between post-treatment OHIP scores and the leisure and sexual impact items was assessed. RESULTS: Two months after delivery of the prosthesis there was significant improvements in the IOD group for looseness when eating, speaking, kissing and yawning. The IOD group reported significantly less post treatment looseness than the CD group for all parameters investigated (p<0.0001). IOD subjects felt less uneasy kissing and less uneasy during sexual activity than CD subjects. Correlations between the two sexual activity items (uneasiness when kissing and during sexual relations) and the OHIP scales were weak. CONCLUSIONS: Edentulism has a negative impact on social and sexual life. Mandibular overdentures provide greater improvement in of unease in intimate activities than new conventional mandibular dentures.

Adult↗
PubMed2004

Restoration of unfavorably positioned implants for a partially endentulous patient by using an overdenture retained with a milled bar and attachments: a clinical report.

The restorative dentist may encounter patients with previously placed misaligned implants that are well integrated. Often, these patients have deficient alveolar ridge contour further complicating treatment options. This clinical report describes a treatment approach for a partially edentulous patient with unfavorably positioned implants that incorporated: (1) an implant-supported milled bar with a removable, metal-acrylic resin, partial overdenture, (2) implant-supported single crowns, and (3) crowns retained by natural teeth.

Acrylic Resins↗
PubMed2004

Correcting a nonparallel implant abutment for a mandibular overdenture retained by two implants: a clinical report.

A mandibular overdenture supported by 2 implants is an effective treatment alternative for the maladaptive denture wearer. The implants may be either splinted, using a bar, or nonsplinted and retained by attachments, such as balls or magnets. When the use of a ball attachment is contemplated, the implant abutments should be parallel to one another along the path of insertion. The following report describes the procedure to correct a nonparallel implant abutment to retain a mandibular overdenture.

Aged↗
PubMed2000

Simplified procedure for replacement of retentive clips in a bar-retained implant overdenture.

Replacing the retentive elements in a bar-retained overdenture can be a difficult and time-consuming procedure. This article describes an impression procedure that allows the matrices in a bar-retained implant overdenture to be replaced in the laboratory using a heat-cured rebase procedure. Long waxing screws are used, which allows the bar to be removed in the rebase impression and incorporated in a new master cast. After completion of the laboratory phase, the bar is screwed back onto the implant abutments and the denture, with new retentive matrices, is inserted.

Aged↗
PubMed1996

Clinical procedure for stabilizing and connecting O-ring attachments to a mandibular implant overdenture.

Conventional overdentures can be made with or without attachments, whereas implant-supported overdentures require bar or stud type attachments. Accurate placement of the attachments in the overdenture is critical for the success of the prosthesis and implants. An improved procedure is presented for stabilizing the existing denture with vinyl polysiloxane impression material during the clinical incorporation of stud attachments to the implant-supported overdenture.

Dental Impression Materials↗
PubMed1997

Interposed bone grafts to accommodate endosteal implants for retaining mandibular overdentures. A 1-7 year follow-up study.

The results are reported on 34 edentulous patients, who underwent interposed autogenous bone graft augmentation in the symphysis of the mandible, combined with bone-hydroxylapatite onlay augmentation of the area posterior to the mental foramina. Two to four implants were placed in the grafted symphysis after 3-5 months. An overdenture was constructed three months later. The follow-up period ranged from one to seven years. An average loss of mandibular bone height of 10-13% was observed. The data provided no evidence of a further time-dependent resorption from two-and-half to seven years.

Adult↗
PubMed1992

Posterior jaw bone resorption in osseointegrated implant-supported overdentures.

For several years, osseointegrated implant-supported overdentures have been used in the rehabilitation of full edentulism with excellent results, at least in the lower jaw. This study involved 3 groups of patients with different prosthetic reconstructions: (1) mandibular overdentures supported by 2 implants connected by a bar (30 patients), (2) mandibular fixed prostheses supported by 4-6 implants (25 patients) and (3) mandibular complete dentures without implant support as controls (85 patients). The primary aim of this study was to examine on orthopantomograms (by means of the area index to minimize distortion and magnification errors), posterior mandibular ridge resorption in the 3 treatment groups. The present data demonstrated a minimal posterior mandibular ridge resorption in patients with fixed implant-supported prostheses. A more considerable posterior ridge resorption was observed in the complete denture group and especially in the overdenture wearers. For the latter, the annual posterior jaw bone resorption after the post-extraction remodeling period of 6 months, was 2- to 3-fold that of full denture wearers. When patients were edentulous for more than 10 years, the difference between the 2 latter groups disappeared. It is suggested that although the overdenture design on 2 implants offers advantages from a financial and failure rate point of view, its indications in younger patients should cautiously be evaluated in a long-term perspective concerning posterior mandibular bone resorption.

Adolescent↗