Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Prosthesis Fitting”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 109 records · Page 6Linked to original sources
PubMedDate not supplied

[Importance of silicone bases in complete dentures].

The use of a silicone base under a total prosthesis makes possible the solution of certain problems of tolerance or maintenance of such denture. I.--Full denture in patients who have received radiotherapy. II.--Full denture with intolerant mucosa. III.--Following failure of classical prosthesis. IV--Prosthesis fitted following pre-prosthetic surgery. The technical problems associated with the fabrication of such prosthesis and possible adjustements are discussed.

Acrylic Resins↗
PubMed1997

[Removable prostheses with controlled distribution of forces on endosseous implants].

The differentiated behaviour of dental abutments and alveolar mucosal tissues following functional loading has always created design problems in the field of removable partial prostheses. This situation of disequilibrium is particularly clear when natural piers are replaced by osteointegrated implants which are by definition unable to adapt to the masticatory load. In order to avoid this different behaviour, the authors feel it is advisable to use a removable partial prosthesis fitted with telescopic retention, defined as "controlled distribution of the forces", which can transfer the functional masticatory load to the osteointegrated implants and alveolar mucosal structures in a harmonious, balanced and homogeneous manner. The authors give a detailed description of the structure and working of this particular type of prosthesis, highlighting its advantages, namely: 1) controlled distribution of occlusal forces to osteointegrated implants and alveolar osteomucosal structures; 2) reduced number of implants required (2 are sufficient); 3) stability of prosthesis comparable to a fixed structure; 4) possibility of removing the latter with the advantage of maintaining oral hygiene around implants; 5) reduced size of prosthesis. Given that this type of prosthesis has been designed, realized and fitted to natural piers, with optimal clinical results, by the Dental Implant Department of the Dentistry Clinic of Turin University since 1969, the authors affirm that this prosthetic structure is particularly suitable in cases of edentulism with advanced maxillary atrophy.

Dental Implantation, Endosseous↗
PubMed1990

Lengthening of below-the-knee amputation stumps using the Ilizarov technique.

Patients with short, traumatic, below-the-knee amputations (BKAs) frequently function as if they have knee disarticulations. The goal of this study was to evaluate the results in patients who had lengthening of their BKA stumps to improved prosthesis fit and increase ambulation. Three patients with traumatic BKAs, who were left with insufficient stumps for proper prosthesis wear, have had their stumps lengthened by Ilizarov's technique of distraction osteogenesis. The lengthening process produced a moderate degree of pain, and all patients had a temporary decrease in their range of motion. Two patients lost a substantial amount of gained length secondary to early full weight-bearing. Despite these difficulties, the procedure produced longer, more durable stumps in all patients with no final loss of knee range of motion.

Adult↗
PubMed2006

[Anatomic variations of the ilio-caval junction encountered in disk prosthesis implantation].

PURPOSE OF THE STUDY: The retroperitoneal mini-invasive anterior approach to the lumbar spine is widely used for disc excision and insertion of a prosthetic disc. A large operating window is needed. Venous wounds constitute one of the most serious complications. We analyzed the angle and position of the iliocaval on the preoperative angio-MRI in search for correlations with the intraoperative findings. Our aim was to determine whether the preoperative angio-MRI gives indications concerning the operative difficulty and the best strategy for prosthesis fitting. MATERIAL AND METHOD: This prospective study included 35 consecutive patients who underwent surgery for implantation of a Maverick disc prosthesis. Average patient age was 46.7 years. The indication for surgery was isolated degenerative discopathy with invalidating chronic low back pain without alteration of the muscle masse or facet joints. A preoperative angio-MRI was performed with T1 spin-echo sequences for the coronal slices and T2 axial slices passing through the upper extremity of the L5-S1 disc. We searched for correlations between the MRI and operative findings. Elements studied were those used in the Capellades classification: height of the iliocaval junction (high, very high, low, very low), position of the common iliac vein (lateral, intermediate, medial), angle formed by the two common iliac veins. RESULTS: The lateral position was the most frequent (31.5%). The average junction angle was 65 degrees). The only position where it was not possible to "pass" under the iliocaval junction was for a very low medial localization with a narrow angle (45 degrees). DISCUSSION: Our series included a homogenous group comparable with other series in the literature. The junction angle for very low medial localizations is of considerable importance because it is impossible to fit the implant in the L5-S1 under the iliocaval junction if the angle is over 60 degrees. CONCLUSION: The position of the iliocaval junction, and particularly its angle, are of considerable importance for insertion of an L5-S1 disc prosthesis. The preoperative angio-MRI provides information on the potential difficulty of the insertion. In addition, with this preoperative information, the patient can be warned that it may not be possible to insert the implant so that a therapeutic alternative may be proposed.

Adult↗
PubMed2003

Cementless mallory-head HA-coated hip arthroplasty for osteoarthritis in hip dysplasia.

Sixty-three cementless Mallory-Head HA-coated femoral prostheses (Biomet, Warsaw, IN) were used in primary total hip arthroplasty in 50 patients with osteoarthritic hips because of congenital hip dysplasia. The implanted cup was also cementless (41 Harris Galante and 22 Ringlock). The patients were followed up for a mean period of 75.1 months (range, 44-110). Clinical and radiologic analysis were performed. Harris Hip Score increased from 42 to 90 points; 97% of the patients had no or only mild pain, and limping decreased from 90% to 20%. Complications were marginal: no infections, one habitual dislocation, one peroperative fracture of the femur, and one transient ischiadic nerve palsy. Two HG cups were revised for augmented polyethylene wear. Radiographically, no subsidence of the prosthesis or bone atrophy of the proximal femur could be detected. No correlations were found between the radiologic phenomena and the clinical outcome, but the tightness of the prosthesis fit had a definitive influence on the radiographic bone remodeling pattern. The cementless Mallory-Head HA-coated femoral prosthesis shows excellent clinical and radiological mid-term results in osteoarthritic hip dysplasia patients. There was no need for the use of a specially designed dysplasia femoral prosthesis.

Adult↗
PubMed1994

[Rescue of infected penile prosthesis: initial experience with prosthesis conservation].

Fitting a penial prosthesis has become an effective procedure to treat sexual impotence. However, its main complication, infection, remains a relatively frequent problem which forces the implant removal with the resulting treatment failure. This paper summarizes our early experience in 4 patients with infected penial prosthesis, who were treated by correcting the patient's general status, adequate antibiotic treatment, and deep and regular curing of the infected area. In these 4 patients, we managed to preserve the implant, achieving an adequate functional and cosmetic result. The paper discusses the pathophysiological mechanisms which would explain these improvements and points to the eventual indications and contraindications of the treatment. Finally, a recommendation is made to use this treatment with caution since our experience was still preliminary.

Humans↗
PubMed1975

Voice rehabilitation after laryngectomy. Results with the use of a hypopharyngeal prosthesis.

The Northwestern voice prosthesis for laryngectomees is described. The prosthesis contains no vibrator but activates vibration of the patient's pharyngeal or upper esophageal tissue by transporting air from the tracheostoma to a fistula in the upper neck, well away from major blood vessels. The prosthesis fits directly onto the laryngectomy tube and allows the patient to breathe, speak, and cough without any manual adjustments. The important advantage of this prosthesis is the fistula location. It can be placed at the time of original surgery and is also workable in patients who have had radiation and extensive radical surgery with total reconstruction of their gullet. The prosthesis can be used by primary total laryngectomees while learning esophageal speech or installed in those who are unable to use the electronic larynx or to learn esophageal speech. Four case studies are presented.

Adult↗
PubMedDate not supplied

[Creation of a weight-bearing leg stump and the fitting for a prosthesis].

Whether for functional or cosmetic reasons in oncologic patients, following amputation or severe crush injuries of the lower limbs with complete severance of vessels and nerves, microsurgery enables a weight-bearing lower limb or femoral stump to be created if such a result cannot be achieved by transplanting plantar skin with an intact vessel-nerve bundle. When first fitting a prosthesis in a patient with a weight-bearing lower leg stump created by autologous grafting of plantar skin employing the microsurgical method, it is advisable initially to partially relieve the grafted covering tissue in the prosthesis shaft. However, as soon as the transplanted skin flap has recovered full sensitivity it is advisable ti fit a limb supported on the end of the stump. It is then longer necessary to support the prosthesis on the ischium or the trochanter major. Fitting of a prosthesis of this type permits optimal rehabilitation.

Adolescent↗
PubMed1985

Deep neck abscess after tracheoesophageal puncture and insertion of a voice button prosthesis.

A deep neck abscess and cervical osteomyelitis developed in a 37-year-old laryngectomy patient 6 weeks after TE puncture and insertion of a voice button prosthesis. This complication resulted in voice prosthesis failure, multiple surgical procedures, 83 days of hospitalization while receiving parenteral antibiotics, and exposure to potentially fatal complications. Some factors contributing to this problem may include an improperly fitting prosthesis, rough insertion of the prosthesis, and altered tissue response to infection from radiation therapy and surgery.

Abscess↗
PubMed2000

Custom design in lower limb prosthetics for athletic activity.

In summary, the prosthetist is the best source of information with regard to the fast-changing lower extremity prosthetics technology for sports. The needs and desires of the amputee should be outlined and balanced with the cost of the desired components and design. In many cases, one carefully designed prosthesis can serve in dual roles for everyday ambulation and certain athletic activities. In other cases, the amputee is limited severely by a prosthesis that is not designed for a specific activity. Using a prosthesis for activities that it was not designed to accommodate can cause physical injury to the amputee as well as structural failure of the device. A properly designed and fitted prosthesis can open a whole new world of activity to the amputee and helps him or her to reach the desired a vocational goals.

Activities of Daily Living↗
PubMed1986

Revision of femoral component loosening with titanium ingrowth prosthesis and bone grafting.

Preliminary results of 24 cementless revision hips are very encouraging and show no evidence of loosening at 12 to 45 months follow-up. With the problem inherent in femoral component loosening and the high incidence of failure from cemented revision total hip arthroplasty, the use of a porous ingrowth long stem prosthesis fitted to the canal with bone grafting proximally offers a logical solution to a very difficult problem.

Adult↗
PubMed2004

Technique for achieving a passive framework fit: a clinical case report.

The clinical application of a 4-step technique for achieving the passive fit of an implant-supported cast bar or framework is reported. Implant-level transfers were attached, splinted intraorally with pattern resin, picked up in an open-tray elastomeric impression, and used to fabricate a working cast containing implant analogs. A light-cured template was used to verify master cast accuracy. A ceramometal fixed partial denture restoration was fabricated on the working cast with a preliminary try-in of the cast metal framework. A passive prosthesis fit was achieved. Failure to create an accurate working cast can distort the intended fit of a cast framework on the abutments in the patient's mouth. Optimal positioning of the implant analog in the master cast depends on (1) the transfer technique and (2) the ability of the system to maintain precise rotational orientation of the transfer components. The splinted transfer technique developed 20 years ago has sometimes been effective in improving the accuracy of framework fit with external hexagon implant-abutment connections, but it has not been documented with newer implant-abutment connections. Techniques for reestablishing master cast accuracy and correcting the superstructure are presented. The use of the presented technique resulted in a passive-fitting framework.

Dental Abutments↗
PubMedDate not supplied

Placement of posterior mandibular and maxillary implants in patients with severe bone deficiency: a clinical report of procedure.

The purpose of this investigation was to modify the method for implant placement in the posterior parts of the arches for fixed implant-supported prostheses using minimally invasive surgery. Eighty-six implants were placed posterior to the mental foramina in patients with severely resorbed mandibles, and 75 implants were placed in the posterior severely resorbed maxilla. Bone grafting from the mandible to the maxillary sinus was performed in 9 patients with severely atrophic maxillae. In all patients, optimal use of the anatomic features of the arch was achieved by tilting the implants. Patients were followed up for 12 to 123 months after prosthesis connection (mean 18 months). Three maxillary implants were lost at the time of abutment connection: 1 in the pterygoid plate, 1 close to the posterior sinus wall, and 1 placed in the palatal cortex. One implant was mobile approximately 1 year later, apparently because of an ill-fitting prosthesis. In the mandible, no implants were lost. The method described for the treatment of edentulous arches represents an alternative therapy to several others currently in use. This minimally invasive surgical procedure should be applicable in an outpatient clinic for treatment of severely resorbed posterior portions of the arches with implant-supported prostheses.

Adult↗
PubMed1984

[Experiences with the Blom-Singer prosthesis following Blom-Singer puncture and following functionally disordered neoglottis phonatria].

The Blom-Singer puncture is a new operative technique which can help to make the laryngectomized patient speak again even years after laryngectomy. 34 patients were treated with a modified procedure. 5 patients with a good voice gave up despite intensive medical and speech therapy. Painstaking postoperative treatment is needed to make the Blom-Singer puncture successful. Patients who had a Blom-Singer prosthesis fitted after a neoglottis procedure spoke after only brief instruction without speech therapy being necessary.

Esophagus↗
PubMed1979

[Disarticulation in the knee joint (author's transl)].

Based on the results with thirty patients, disarticulation in the knee is to be recommended as a very good amputation level. Two groups of patients seem to be especially suitable for this amputation level: patients with malignant bone tumors of the proximal tibia or fibula and patients with peripheral vascular diseases. Above all, the easy operational technique and the functionally valuable long thigh stump offer decisive advantages as compared with amputation of the thigh. Problems with prosthesis fitting were solved through modification of the socket shape as well as new developments in artificial knee joints.

Adolescent↗
PubMed1976

Painful pigmented prosthesis pressure papules.

Two patients who presented with tender hyperkeratotic papules involving their weight-bear.ing amputation stumps were studied. Although these clinical findings are common in the experience of prosthetists, the author has been unable to find any documentation of these findings in the literature. All attempts at relining and reshaping the cups of the original offending prostheses by experienced prosthetists were unsuccessful. The eruption cleared only after entirely new prostheses were designed. It would appear that this condition is due to a poorly fitting prosthesis.

Adult↗
PubMed1989

Noninvasive measurement of the stiffness of tissue in the above-knee amputation limb.

In order to characterize the mechanical properties of the soft tissue in above-knee amputations, nine subjects were measured with a Doppler ultrasound system. Measurements were made at four locations: anterior, posterior, lateral, and medial. The characterizations included tissues up to 2.5 cm deep. The average posterior moduli are significantly greater than the anterior and lateral parameters. No significant difference was found among moduli from the medial zone compared to other areas. Superficial tissue had a significantly higher modulus than the tissue beneath. A simple method for transducer placement produced repeatable results. The present technique proved to be useful with patients in good health, and with no severe residual limb complications. The information generated with the ultrasonic device may aid in prosthesis fitting and will be used in a Computer-Aided Design (CAD) system as well as in other clinical applications.

Amputation, Surgical↗