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At least 1,729 records · Page 96Linked to original sources
PubMed1991

Use of an implant in repair of a fixed partial denture. A clinical report.

A repair technique for a fractured solder joint in a multiple-unit fixed partial denture has been presented. The advantages of this technique include (1) retention of part of an existing restoration; (2) provision of additional support to minimize future fracture; (3) removal of the implant crown for periodic evaluation and/or treatment; and (4) retention of a fixed partial denture where a removable prosthesis might otherwise be needed. The primary disadvantage of this technique is the time and expense associated with implant placement.

Adult↗
PubMedDate not supplied

[Experimental study on the role of the mylohyoid muscle in the instability of dental prostheses].

Using cinematographic and radiocinematographic recording techniques, the authors studied the movements of inferior prosthesis unstable in the lingual region. Pronunciation of the diphthong La... La... La... causes upward and forward projection of the prosthesis. Electromyography records contraction of the mylo-hyoid during pronunciation of these diphthongs. In the totally edentulous patient, the crest of the mylo-hoid is very close to the alveolar crest. From a clinical standpoint, functional exploration of the mylohyoid is easy, the index finger being placed along the mylo-hyoid crest and the patient asked to say La... La... La... If the index finger is pushed forwards and up, surgical intervention to lower the mylo-hyoid (Trauner's operation) is indicated, in association or not with other procedures designed to treat the other causes of instability or the prosthesis.

Denture Retention↗
PubMed2005

Aesthetic clasp design for removable partial dentures: a literature review.

Removable partial dentures (RPD) are an effective and affordable treatment option for partial edentulism. If the main reason for seeking treatment is the need for improved aesthetics, treatment should be geared towards achieving this goal. This article is the result of a literature study on aesthetic clasp design for the conventional RPD. In this context, the position of the clasp on the tooth, clasp types, clasp material and alternative methods of retention are reviewed. Although published in reputable journals, the authors report that many articles published on this subject are of a descriptive nature and lack scientific evidence. Therefore, clinicians are encouraged to be critical in their interpretation of literature and the application of published information in their clinical practices.

Dental Clasps↗
PubMed2005

A review of prosthodontic management of fibrous ridges.

'Fibrous' or 'flabby' alveolar ridges pose significant problems for the provision of stable and retentive dental prostheses for affected patients. In particular, problems arise during the act of impression taking, when forces cause the mobile denture bearing tissues to become distorted. The purpose of this paper is to review the impression techniques that can be used to optimise the treatment of edentulous patients with 'flabby' alveolar ridges.

Dental Impression Technique↗
PubMed1992

Bioactive ceramic prosthetic coatings.

The concept of bioactive ceramic coatings on macroscopically smooth prostheses tries to reconcile opposing principles: the ceramic with beneficial bone tissue growth effects is used as a coating since it does not have sufficient strength and toughness to be used by itself as a prosthesis material. But strength is still an issue since the coating is the primary means of transferring stresses from prosthesis to surrounding tissues. The interface between the metal core and ceramic surface is then critical, since it essentially depends on the strength characteristics of the ceramic. Conversely, when the ceramic coating is used as a means to enhance bone-tissue formation around and into the prosthesis surface, thereby helping to establish a mechanical form of retention, the adhesion of ceramic coating to metallic substrate is not critical. The optimum characteristics of the ceramic are then those that produce the highest effect on bone-tissue growth rates immediately after surgery. The rate of bioactivity is related to the chemical reactivity of the material causing interfacial dissolution, precipitation, and ion exchange reactions. Furthermore, it also appears to depend on a substratum function affecting mineral precipitation, collagen deposition, and cellular differentiation and proliferation.

Biocompatible Materials↗
PubMed1996

[A case of labial adhesions with urinary retention].

A 69-year-old woman was admitted to our hospital complaining of urinary retention. On examination, the labia was found to be fused extensively, with a pinhole opening at the midline. The adhesions were separated under spinal anesthesia. One year after operation, there remains no recurrence. Etiological factor in labial adhesions are thought to include a combination of local inflammation and estrogen deficiency. In our case, the patient had hip joint disease. Hip joint disease is shown to influence the formation of adhesions by interfering with perineal hygiene and decreasing sexual activity.

Aged↗
PubMedDate not supplied

An intraoral prosthesis to control drooling in a patient with amyotrophic lateral sclerosis.

Many alternatives exist for treating chronic drooling. The treatment of a patient with amyotrophic lateral sclerosis who complained of chronic drooling and lack of retention of fluids while drinking is presented. In this case, an alternative type of intraoral prosthesis, not previously reported in the dental literature, was used to treat chronic drooling. A lip plumper prosthesis was fabricated to approximate the partially incompetent lips and create an oral seal. The results of the prosthesis therapy for this patient are encouraging both physically and psychologically.

Aged↗
PubMedDate not supplied

Use of SIG device to accurately place permanent miniature dental implants to retain mandibular overdenture. A case report.

A case of mini-dental implant insertion for retention of a mandibular overdenture in a hospitalized patient has been documented. The additional use of the SIG (drill guide) directional device in the implant placement protocol gave the practitioner more confidence and resulted in the proper alignment of the three ball-top, one-piece fixtures. The three implants were inserted exactly 1 cm apart and parallel to each other. The distal fixtures were approximately 1 cm away from the mental foramina, thereby eliminating the risk of lip paresthesia. Keeper caps were placed in the denture's intaglio after one month. The keeper caps allowed for proper retention of the overdenture. The caps also enabled the patient to easily insert and withdraw his denture, even though he displayed limited manual dexterity. The tissue response was excellent, and oral hygiene was made easier with adequate spacing of the exposed ball-tops. The overall experience for both the operator and the patient was very positive. General dentists should be able to readily master this technique and add it to their armamentarium for the benefit of all their patients.

Dental Implantation, Endosseous↗
PubMed2002

A maxillary implant overdenture that utilizes angle-correcting abutments.

Placement of dental implants to enhance complete denture stability and retention is a well-accepted treatment modality. Most implant overdenture abutments and related components require parallelism within approximately 10 degrees to function properly. Non-parallel implant placement as a result of flared maxillary bone may preclude the use of conventional implant overdenture abutments, requiring the use of costly custom abutments or bar prostheses. A case report is presented that illustrates the use of a new, 2-piece, angled overdenture abutment to accommodate non-parallel implant placement.

Aged↗
PubMed2003

Use of mandibular implant overdentures: treatment policy in prosthodontic specialist clinics in Sweden.

The aim was to examine the use of mandibular implant overdentures in Swedish prosthodontic specialist clinics. Questionnaires related to treatment with mandibular implant overdentures during 2001 were sent to the heads of the 30 prosthodontic specialist clinics of the Public Dental Health Service in Sweden. Completed questionnaires were received from 28 (93%). The number of treatments with mandibular implant overdentures varied much among the clinics (0 to 22). Seven clinics had not performed any such treatment, and the median number was 2. The number of fixed implant-supported prostheses was much higher (median value 17, range 4 to 100). The correlation between the number of implant overdentures and fixed implant-supported prostheses in edentulous mandibles was weak (r = 0.33; P = 0.10). The most common anchorage system was ball attachments on two unsplinted implants. The most common reason for the choice of the overdenture treatment was the reduced cost, whereas the patient's main wish to improve denture retention came next. The question whether the demand for implant overdentures had increased during the last few years, was answered with "no" by 19, with "yes" by 5 and with "don't know" by 4 clinics. All but one responded that their attitude to implant overdentures had not changed after the introduction of free pricing in Swedish dentistry. It can be concluded that compared to the rapidly increasing international use of mandibular implant overdentures, this treatment of edentulous patients is rare in Sweden, where fixed implant-supported prostheses still are predominant.

Dental Clinics↗
PubMed2002

A clinical follow-up study of magnetically retained overdentures (Dyna-system).

This study reports on 99 magnetic retention units (root caps and minimagnets) were used to stabilise overdentures in 66 patients. Tooth mobility, root caries, periodontal health, denture function, integrity of root caps and minimagnets were evaluated 4-12 years after insertion. The results showed a marked reduction in root mobility (increased stability in 86% of the roots), but extraction of 8% of the roots. After 116 months the survival rate calculated according to Kaplan and Meier was 79% for roots, 90% for caps and 77% for minimagnets. Nine per cent of the roots demonstrated caries and 10% discoloration of the root caps.

Adult↗
PubMed1995

Prosthetic management of the atrophic mandible using endosseous implants and overdentures: a six year review.

This paper presents the treatment results and experiences gained from a retrospective study of patients treated with the IMZ osseo-integrated implant system and mandibular overdentures. Patients experiencing problems wearing conventional dentures were assessed by the implant team and 65 cases were treated with 154 endosseous implants placed in the edentulous mandible. Two to four implants were placed in each case and in addition some patients have had augmentation of the mandible with hydroxyapatite. The definitive mandibular prostheses were supported by both implants and the residual ridges. A variety of retention systems were utilised, which included different types of bar and clip, stud attachments, and magnets. The patients have been followed up regularly and evaluated after periods of between one and six years. Six implants have failed over this time resulting in a success rate of over 96%. Most patients expressed a high degree of satisfaction with their new overdentures. There was, however, a considerable burden of maintenance care required for the patient group examined. The findings demonstrate that implant retained overdentures offer a highly effective means of oral rehabilitation for the atrophic mandible, restoring both oral function and facial form.

Adult↗
PubMedDate not supplied

Experimental evaluation of a new self-expanding patent ductus arteriosus occluder in a canine model.

PURPOSE: A new self-expanding patent ductus arteriosus (PDA) occluder was designed. MATERIALS AND METHODS: Percutaneous closure of surgically created aortopulmonary shunts was attempted in 19 dogs. The occlusion device consisted of a nitinol wire frame tightly woven into a cylinder with a flat retention disc. A polyester-filled frame was used in the last six procedures. A 6-F introducing sheath was advanced across the aortopulmonary conduit into the descending thoracic aorta. The prosthesis (attached on a stiff delivery cable) was advanced through the introducing sheath. The retention disc was first released in the descending thoracic aorta, then the cylindrical device frame was expanded within the conduit by withdrawing the sheath. RESULTS: Subtotal misplacement into the descending aorta occurred in one procedure (overall technical success rate, 95%), and one animal died before the 1-week follow-up. Complete angiographic shunt closure was achieved in seven of 18 (39%) animals at 30 minutes, 12 of 17 (71%) animals at 1 week, 14 of 17 (82%) animals at 1 month, and 11 of 12 (92%) animals at 3 months. Significantly higher 30-minute closure rates occurred with polyester-filled occluders compared with nonfilled occluders (five of five [100%] vs one of 13 [15%]; P = .002). Persistent shunt at 3 months occurred in only one nonfilled device (6%). In the remaining 16 animals, both orifices of the shunt were covered by a smooth glistening neoendothelium at postmortem examination. CONCLUSION: This device combines the advantages of small delivery system, easy placement, self-centering, and repositionability. Immediate shunt closure can be reliably accomplished with the polyester-filled prosthesis.

Alloys↗
PubMed1991

[Surgical prosthetic approach to sequelae of a case of noma involving half the face].

In this study, the authors discuss a prosthetic rehabilitation case resulting from loss of substance due to Noma. The dental prosthesis is made from tinted acrylic resin with a combination of two means of retention. The lower mean of retention is composed of a hook leaning on a handle which has been attached to that end on a metal armature and the upper mean of retention is connected to the bridge of spectacles.

Adolescent↗