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Results for “Maxillofacial Prosthesis”

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At least 163 records · Page 9Linked to original sources
PubMed1994

[Possibilities of improving surface properties of medical implants 1].

The work is planned in three parts. The first reviews the various modification of the surface-treatment procedures for medical implants. A separate section deals with procedures involving the application of material or the removal of material, and those is which material is not applied or removed. Special consideration is paid to the surface-treatment procedures for facial or mandibular implants, and techniques involving calcium phosphate and hydroxylapatite coatings.

Biocompatible Materials↗
PubMedDate not supplied

Oral rehabilitation and quality of life following the treatment of oral cancer.

This is the first of two articles concerning the surgical and prosthodontic rehabilitation of patients who have undergone surgery for cancer of the mouth. This article discusses the morbidity associated with treatment and its effect on quality of life. The second article will consider aspects of the prosthodontic rehabilitation particularly with regard to obturator construction following maxillectomy.

Body Image↗
PubMedDate not supplied

The pediatric patient at a maxillofacial service: Eye prosthesis.

Congenital absence or loss of the ocular globe during childhood causes psycho-social and cosmetic disorders and compromise the normal development of the orbital region. The literature relating to congenital or acquired etiology, due to trauma or disease, demonstrates the necessity of prevention and early detection in order to minimize the sequelae and disturbances in orbital growth. Installation of an eye prosthesis is essential to the rehabilitation process, so as to produce satisfactory development of the region. In order to characterize a profile of the child patient with this condition, a survey was carried out at the Prosthetic Eye sector, Out-patient Clinic, Discipline of Maxillofacial Prosthodontics, School of Dentistry, University of São Paulo (FOUSP), during the period from 1988 to 2003. The 124 (14.02%) patients within the age group of 0-13 years registered for ocular prosthesis were divided into a first group of 64 patients (51.62%) with 0-7 years, and a second group of 60 patients (48.38%) with 8-13 years. Fifty nine were girls and 65 were boys. No statistical significance was observed regarding the distribution of genders in the two analyzed age groups (p = 0.069). However, there was statistical significance at the level of 0.01 in relation to etiology, with higher prevalence of congenital and pathological disturbances in the younger group and traumatic occurrences in the older group. The etiology also presented variation according to the gender, at the significance level of 0.05, where girls presented three times less trauma than boys in the older age group. The necessity of prosthetic ocular repair was evenly distributed along the childhood period and the eye losses that required prosthetic treatment equally affected both genders. However, the etiology of eye loss varied according to the considered gender and age bracket.

Adolescent↗
PubMed2005

[Evaluation of the speech outcomes in patients with unilateral maxillary defect rehabilitated with maxillary obturator prosthesis].

PURPOSE: Evaluation of the outcomes in 15 patients with unilateral maxillary defect before and after maxillofacial obturator prosthesis. METHODS: 15 patients with unilateral maxillary defect were included in this study, who received obturator prosthesis for maxillary rehabilitation. The pronunciation of the examined phonetics such as /a/, /o/, /e/, /i/, /u/ were transferred into CSL4400 before and after treatment. The mean value of the first, second, third formant were measured. Paired t test of SPSS11.0 was used for statistical analysis. RESULTS: There was statistically significant difference on F2 and F3 before and after treatment (P<0.05). After treatment the value of F3 was increased significantly. CONCLUSIONS: The soft palate was reconstructed after obturator treatment. The space between the nasal and oral cavity was sealed,through which a similar normal oral cavity was obtained. Except F1, F2 and F3 of all the vowels changed after treatment. Maxillofacial prosthesis can improve the speech function of patients with unilateral maxillary defect effectively.

Humans↗
PubMed2005

[Efficacy of use of X-ray contrast carbon material in maxillo-facial surgery].

The possibilities of the use of carbon implants in cases of any defects of any part of facial skeleton and soft tissues of both inherent and acquired nature were studied. Taking into account X-ray transparency of carbon implants the experiment was carried out to make the material X-ray contrast when using the addition of powdered metallic boron in the range of concentrations 8-12%. It was successful and the samples were visualized. In these cases spiral computed tomography is the optimal tool to make all deformation volume clear, to plan operative interventions and to observe the treatment results.

Adult↗
PubMed2001

[The complex facial prosthesis. The value of bone-anchored maxillofacial prostheses in the treatment of extensive loss of facial tissue].

Maxillofacial surgeons are more and more confronted with wide defects of the face, particularly after resection of facial cancer. Complex wounds of the face, whatever the etiology may be, poses the difficult problem of their rehabilitation. The surgical reconstruction offers usually the most interesting solutions on the conceptual and morphological stages. There remain some particular cases where the therapeutic choice tends towards the rehabilitation by epitheses. The improvement of texture and color of epitheses and the improvement of the possibilities of their osseous anchorage by implants (endo-osseous or juxta-osseous) permit to reconstruct that kind of complex facial wounds with restoration of oral function and with a good morphologic result.

Adult↗
PubMed2004

[Implant prosthesis rehabilitation after maxillofacial injuries--case report].

The dental and oral rehabilitation of patients with severe trauma that involves the oral cavity is demanding and challenging. Recently, advanced surgical techniques and innovations in oral implantology led to more sophisticated treatment modalities that may better fulfill the patients needs in special situations. Young people rather often suffer from accidents--at school and during leisure activities--in a period of their life that has a great impact on their physical, mental and personal development. Thus, the wish for a quick functional and esthetical rehabilitation contrasts with the complex clinical situation and the compromised oral conditions. All persons involved in the rehabilitation process--including the patient--must seek for the best solution that takes into account treatment time, invasivity of procedures and patients morbidity. Further, it is also observed that insurances very much stress the reduction of cost and the simplicity of treatment. This will also influence the treatment planning and the sequence of the procedures as shown by the following case.

Accidental Falls↗
PubMedDate not supplied

Indications for extra-oral implantology.

In this paper, the general indications for implantology for facial prosthesis in the maxillofacial bones are elaborated. Information from both the literature and our own surgical experience emphasizes that only specific locations of the facial bones and skull are suitable for implant fixtures. Careful indication and surgery are required for patients who were exposed to radiotherapy. The success of maxillofacial rehabilitation depends on multidisciplinary cooperation.

Ear, External↗
PubMed1997

Aesthetic considerations for maxillary obturators retained by implants.

Maxillary obturators are prostheses used to replace maxillary tissues, missing congenitally or removed by trauma or tumor ablative surgery. These prostheses are used to restore function (speech, swallowing, and mastication) and aesthetics. A considerable number of edentulous patients have difficulty in retaining this type of prosthesis. Utilization of osseointegrated dental implants is a significant adjunct in treating these cases, but it must be undertaken with careful planning to ensure predictable aesthetic results. The learning objective of this article is to discuss the technique of designing aesthetic maxillary prostheses supported by osseointegrated dental implants. The discussion includes indications and contraindications, and a postcarcinoma surgery case is used to illustrate the clinical procedure.

Carcinoma, Squamous Cell↗
PubMed2000

Clear acrylic resin device for orientation and placement of a small facial prosthesis.

A small-sized facial prosthesis can be difficult to orient accurately in correct relationship to a defect. This problem may be reduced by embedding a magnet in the prosthesis and constructing a magnetic holding device from clear acrylic resin. This device can be used as a stand during adhesive application to reduce adhesive contamination and acts as orientation guide during prosthesis placement.

Acrylic Resins↗
PubMedDate not supplied

Rehabilitation of severely resorbed maxillae with zygomatic implants: an evaluation of implant stability, tissue conditions, and patients' opinion before and after treatment.

PURPOSE: The aim of the present study was to describe experiences of 11 consecutively treated patients who received zygomatic implants. Patient results were assessed through clinical and radiographic evaluations of tissue conditions, including resonance frequency analysis (RFA). MATERIALS AND METHODS: Eleven patients were treated with implant-retained fixed prostheses. A total of 64 implants were placed, 22 of which were placed in the zygoma. Fixed prostheses were removed to allow clinical and radiographic evaluations at a follow-up visit 18 to 46 months following implant placement. RFA was performed on all implants. A visual analog scale was used to assess patient satisfaction before and after treatment. RESULTS: All patients received implant-supported prostheses. All zygomatic implants demonstrated clinical signs of osseointegration. One anterior implant was lost during follow-up. Mean ISQ values for the zygomatic and anterior implants were 65.9 (range, 42 to 100) and 61.5 (range, 48 to 71), respectively. Twenty-four implants showed moderate inflammation, with 3 exhibiting severe inflammation. Most anterior implants (75.6%) showed a marginal bone recession of 1 thread or less. Four zygomatic implants showed bone loss of 4 to 5 threads, and 5 zygomatic implants exhibited no marginal bone support. Patients described significant improvement in chewing ability and esthetics but did not describe changes in speech. DISCUSSION: The use of zygomatic implants can help the clinician avoid the need for bone grafting and reduce morbidity. In addition, it can shorten the treatment time considerably. CONCLUSION: This preliminary report demonstrates that zygomatic implants can provide posterior support to fixed prostheses in patients who lack bone volume to place conventional implants without encroaching upon the maxillary sinus.

Adult↗