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Results for “Maxillofacial Prosthesis”

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At least 325 records · Page 18Linked to original sources
PubMed1980

Obturator-orbital prosthesis.

A technique is described to treat patients who have had mutilating surgery, resulting in facial disfigurement, loss of an eye, and a surgical defect in the palate. The technique utilizes an occular prosthesis, a hollow-bulb obturator, and complete dentures.

Humans↗
PubMed1979

Accessory retention for a facial prosthesis.

A possible means of retaining a nasal prosthesis by utilizing newly designed eyeglass frames has been proposed. In many situations, this procedure can enhance the successful rehabilitation of a patient by the maxillofacial prosthodontist.

Eyeglasses↗
PubMed1999

Considerations for free-flap reconstruction of the hard palate.

OBJECTIVE: To evaluate the use of microvascular free-tissue transfers in the reconstruction of hard palate defects. DESIGN: Retrospective review of a case series. SETTING: Two tertiary referral centers. PATIENTS: Thirty patients had hard palatal defects that resulted from ablative oncologic surgery: 10 total or subtotal palatal defects, 14 hemipalatal defects, and 6 anterior arch defects. INTERVENTION: Nine fibular, 11 rectus abdominus, 3 scapular, 6 radial forearm, and 1 latissimus dorsi free flaps were used to reconstruct these defects. MAIN OUTCOME MEASURES: Separation of the oral cavity from the nasal and sinus cavities, complications, oral diet, speech intelligibility, and overall quality of life. RESULTS: No flap failures occurred, and all palatal defects were ultimately sealed. Nineteen patients eat a regular diet, while the remainder maintain a soft diet. Twelve patients use a conventional dental prosthesis; 8 of the dental prostheses are supported by implants. Of 23 patients examined for speech, 18 have no disorders, 3 exhibit hyponasal speech, and 2 have hypernasal speech. Overall University of Washington, Seattle, quality of life scores were fair in 2 patients, good in 6, and excellent in 12. CONCLUSIONS: Free-flap reconstruction of the palate provides reliable permanent separation of the oral and sinonasal cavities in one stage. In addition, the potential for dental rehabilitation with the restoration of masticatory function and normal phonation exists. Flap choice is tailored to specific palatal defects as well as patient needs.

Adolescent↗
PubMed2006

[Clinical study of implant-retained facial prosthesis].

OBJECTIVE: To evaluate clinical results and technical characteristics of implant-retained facial prosthesis. METHODS: Six patients with facial defects underwent implant retained prosthesis treatment, of which 3 orbita defects (including upper and lower eyelids, eyeball) in 3 cases, 2 ears defects in 2 cases, and a nose defect in one case. Under local anaesthesia 21 extra-oral implant were placed, facial prosthesis were individually made six month postoperatively. Follow up ranged from 6 month to 6 years. RESULTS: All 21 implants osseointegrated well, implant lost and peri implantitis was not found. All 6 cases had individual facial prosthesis and were satisfied with the prosthesis. CONCLUSIONS: Extra oral implants provided excellent retainment for facial prosthesis; result of current silicon with individual color shade is encouragable.

Dental Prosthesis, Implant-Supported↗
PubMedDate not supplied

Complex craniofacial reconstruction using an implant-supported prosthesis: case report with long-term follow-up.

In complex craniofacial reconstruction involving an implant-supported prosthesis, problems such as tumor recurrence may require additional surgical resection. The solution to such recurrence may be autogenous bone grafting or additional implant placement or both (after resection of the tumor) and revision of the prosthesis. Tumor recurrence was seen during an 11-year, 8-month follow-up of a 58-year-old woman who had had an extensive mid-face defect. The various treatments, including extraoral and intraoral prostheses, provided the patient with an acceptable quality of life without interruption in use of the prostheses.

Bone Transplantation↗
PubMed1988

Chairside color verification for facial prostheses.

The coloring technique may be used for facial prosthetic materials that can be processed in gypsum molds. With different surface textures and varying thicknesses built into the technique, it is a reliable method for color verification of facial prosthesis before final processing.

Color↗
PubMed2002

Change in a maxillo-facial prosthesis material effecting from environmental factors: a clinical report.

The purpose of this study was to indicate change in an auricular prosthesis resulting from environmental factors. An auricular prosthesis was made from a commercially maxillo-facial dental materials. The patient used this prosthesis. After one year, the auricular prosthesis was changed, it was nonesthetic. The prosthesis was made over again from the beginning. The prosthesis was changed from environmental factors such as sunlight, wetting and drying, cleaning and secretions. Facial prosthesis was fabricated anew because of color changes and surface changes.

Ear↗
PubMed1977

[Treatment of an orbital defect with an eye prosthesis with an electronically controlled eyelid, synchronous to the intact eye].

For the treatment of an orbital defect after exenteratio orbitae, an eye prosthesis with flexible upper eyelid was developed. The artificial eyelid moves synchronously with the natural contralateral upper eyelid by electronic control. The electric signal of a light barrier mounted on to a spectable frame in front of the intact eye is intensified and transmitted to an electromagnet. The electromagnet is located in the obturator prosthesis and lifts the artificial eyelid.

Electronics, Medical↗
PubMed2004

Influence of attachment systems on load transfer of an implant-assisted maxillary overdenture.

PURPOSE: This photoelastic study compared the load transfer characteristics of 2 retention mechanisms in an implant-assisted overdenture prosthesis. MATERIALS AND METHODS: Four implants were incorporated into a photoelastic model of a moderately resorbed edentulous human maxilla. Two retention mechanisms were studied by changing components on the same model and the palateless overdenture. The retention mechanisms studied were bar splint with anterior clip and distal resilient attachments, and solitary ball/O-ring attachments. Loads, ranging from 1.4 to 14.4 kg, were applied to the palatal incline of central incisors and buccal incline of premolars with and without balancing contacts. Stresses developed around all the implants under each loading condition were photographed in the field of a circular polariscope. RESULTS: With both retention mechanisms, protrusive and laterotrusive loads without balancing contacts caused instability of the overdenture, producing minimal stress around the implants in the supporting structure. High intensity stresses indicating intrusion of the posterior implants were noted when the bar/distal resilient attachment overdenture had balancing contacts for protrusive and laterotrusive loads. The posterior implants of ball/O-ring attachment overdenture exhibited high intensity stresses indicating not only intrusion, but also bending, when the occlusion was balanced. CONCLUSIONS: Balanced occlusion was required in both retention mechanisms for stability of the implant-assisted overdenture when clinically acceptable loads were applied. The protrusive and laterotrusive loads were not distributed equitably in either mechanism, since highest stresses occurred at the posterior implants.

Compressive Strength↗
PubMed2000

Primary insertion of implants in the zygomatic bone following subtotal maxillectomy.

A case of maxillary carcinoma treated with primary insertion of Brånemark implants into the zygomatic bone following subtotal maxillectomy is reported. This method has several advantages. First, early detection of postoperative recurrence is easier than with closing the flap. Second, when the implant is inserted into the midfacial region, zygomatic bone can be useful because of thickness. In addition, applying a maxillary prosthesis in the early stages avoids contracture of facial soft tissue. This primary reconstructive method is effective in cases of preserved zygoma after total maxillectomy.

Carcinoma↗
PubMedDate not supplied

Engineered bar design for a midface defect: a case report.

This case report describes the design process for engineering an implant-retained bar to support maxillary dental and facial prostheses for a patient missing his midface, including the maxilla, bilaterally. A computer-driven finite element analysis program was used to anticipate the forces and moments on each implant to distribute occlusal forces as evenly as possible. The implants, and later the prosthesis, were used to support the upper lip in the absence of bony support. The completed restorations greatly improved the patient's speech, eating, and appearance.

Aged↗