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Distal Extension (distal + extension)

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Medical Sciences100%

Terms modified by Distal Extension

  • distal extension removable partial denture
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    Selected Abstracts

    Long-Term Effectiveness of Operative Procedures for Stanford Type A Aortic Dissections

    JOURNAL OF CARDIAC SURGERY, Issue 3 2004
    Rudolf Driever
    Methods: From 1990 to 1999, 50 patients (32 men (64.07%); 18 women, (36.0%); mean age 57.4 ± 11.1 years) underwent operation for ascending aortic dissection. Surgical strategies included aortic root replacement with a composite graft (21/50; 42.0%), valve replacement with supracoronary ascending aortic graft (3/50, 6%), and valve preservation or repair (26/50; 52.0%). Results: Overall hospital mortality rate was 18.0%. Follow-up was completed for 47 patients (94.0%) and ranged from 1 month to 10.5 years (mean 28.8 months). Actuarial survival for patients discharged from the hospital was 84% at 1 year, 75% at 5 years, and 66% at 10 years. There was no significant difference between the various procedures regarding mortality, neurological complications, long-term survival, and proximal reoperations. The ascending aorta alone was replaced in 8 of 50 patients (16%), ascending and hemiarch in 30 of 50 patients (60%), and arch and proximal descending aorta in 12 of 50 patients (24%). Hospital mortality (11.5%, 20.0%, and 16.7%, respectively; p > 0.05) and 5- and 10-year survival (p > 0.05) were not statistically dependent on the extension of the resection distally. Residual distal dissection was not associated with a decrease in late survival. With regard to emergency surgery (36/50) there was no significant difference in hospital mortality (p > 0.05) and 5-year survival (p > 0.05) between those who had undergone coronary angiography (19/36; 52.8%) on the day of surgery with those who had not (17/36; 47.2%). Conclusions: Preservation or repair of the aortic valve can be recommended in the majority of patients with type A dissection. Distal extension of the resection does not increase surgical risk. Residual distal dissection does not decrease late survival. Preoperative coronary angiography may not affect survival in patients undergoing emergency surgery. (J Card Surg 2004;19:240-245) [source]

    Radiological interpretation of the navicular bone

    EQUINE VETERINARY EDUCATION, Issue 5 2008
    S. Dyson
    Summary Acquisition of a sufficient number of high quality radiographic views is an essential prerequisite to accurate radiological interpretation of the navicular bone. This requires appropriate preparation of the foot, careful attention to limb position and to both centring and direction of the x-ray beam, according to hoof capsule conformation. Artefacts are easily created. Potentially significant radiological abnormalities include: entheseiophytes at the proximomedial and proximolateral aspect of the bone; proximal or distal extension of the flexor border of the bone, distal border fragments, 8 or more large and variably shaped distal border radiolucent zones; discrete radiolucent areas in the spongiosa with or without detectable communication with the flexor cortex; new bone at the sagittal ridge; increased thickness of the flexor cortex; sclerosis of the spongiosa; and a bipartite bone. [source]

    Detection of improvement in the masticatory function from old to new removable partial dentures using mixing ability test

    JOURNAL OF ORAL REHABILITATION, Issue 9 2005
    A. ASAKAWA
    summary, The aim of this study was to determine the sensitivity of the Mixing Ability Test to detect improvement of masticatory function in subjects on transition from old to new removable partial dentures. Thirty-two subjects (seven males, 25 females, mean age 65·0 years) with distal extension partially edentulous area in mandible and/or maxilla participated in the study. The following reasons were presented for replacing the old removable partial dentures with new ones: fracture and/or poor fitness of retainers, extraction of abutment teeth, poor fitness of denture base, severe wear of artificial teeth and request for metal base dentures. Masticatory function with old and new removable partial dentures after an adaptation period (mean 27·4 weeks) was evaluated by the Mixing Ability Test. Subjects were asked to masticate five two-coloured wax cubes with each removable partial denture. Mixing Ability Index was obtained from the colour mixture and shape of the masticated cubes. Wilcoxon signed-rank test was used to test the difference of Mixing Ability Indexes between old and new removable partial dentures. The mixing ability indexes with new removable partial dentures (mean ± s.d.: 0·70 ± 0·68) was significantly higher (P < 0·001) than those with old removable partial dentures (,0·11 ± 1·13). The results suggest that the Mixing Ability Test was capable of detecting improvement in masticatory function with new removable partial dentures. [source]

    Immediate occlusal loading of Osseotite implants in the lower edentulous jaw

    CLINICAL ORAL IMPLANTS RESEARCH, Issue 3 2004
    A multicenter prospective study
    Abstract Objective: This paper reports the results of a prospective multicenter clinical study on immediately fully occlusally loaded full-arch screw-retained prostheses with distal extensions (hybrid prostheses) supported by Osseotite implants inserted in edentulous lower jaws. Method and material: Sixty-two patients were enrolled in four clinical centers. Three hundred and twenty-five Osseotite implants were inserted and occlusally loaded according to an immediate loading protocol. The temporary prosthesis was delivered 4 h from surgery. The final prosthesis was delivered after 6 months. Marginal bone loss was monitored from periapical radiographs using a computerized technique. Results: Two implants failed to integrate within 2 months of occlusal loading. A cumulative implant success rate of 99.4% was achieved for a period of 12,60 months postplacement (mean 28.6±14.1 (SD) months). Crestal bone loss around the immediately loaded implants was similar to that reported for standard delayed loading protocols. Conclusion: The results of this study suggest that the rehabilitation of the edentulous mandible by an immediate occlusally loaded hybrid prosthesis supported by five to six Osseotite implants represents a viable alternative treatment to classic delayed loading protocols. Résumé Cette étude rapporte les résultats d'une étude clinique multicentrique prospective sur la charge occlusale complčte immédiate de l'ensemble de la mâchoire sur des prothčses retenues par des implants-vis avec une extension distale supportée par des implants Osséotite insérés dans la mandibule de patients édentés. Soixante-deux patients ont été inclus dans quatre centres cliniques et 325 implants Osséotite ont été insérés et mis en charge occlusale suivant le protocole de charge immédiate. La prothčse temporaire était placée quatre heures aprčs la chirurgie. La prothčse finale était placée aprčs six mois. La perte osseuse marginale était enregistrée ŕ partir de radiographies périapicales via l'utilisation d'une technique informatisée. Deux implants ne se sont pas intégrés dans les deux mois de la mise en charge occlusale. Un taux de succčs cumulatif des implants de 99,4% a été atteint pendant une période de douze ŕ soixante mois aprčs le placement (moyenne 28±14,1 mois). La perte osseuse crestale autour des implants mis en charge immédiatement était semblable ŕ celle rapportée pour les protocoles de mise en charge retardée. Les résultats de cette étude suggčrent que la réhabilitation de la mandibule chez l'édenté par des prothčses placées sur des implants immédiatement mis en charge placées sur cinq ou six implants Osséotite représente un traitement alternatif au protocole classique avec une mise en charge retardée. Zusammenfassung Ziele: Diese Arbeit präsentiert die Daten einer longitudinalen klinischen Multizenterstudie über sofort mit Kaukräften belastete und verschraubte Totalprothesen mit distalen Extensionen (Hybridprothesen). Als Verankerung dienten Osseotiteimplantate in einem zahnlosen Unterkiefer. Methode und Material: Für diese Studie behandelte man in vier klinischen Zentren 62 Patienten. Gemäss einem vorgegebenen Protokoll setzte man 325 Osseotite-Implantate und belastete sie sofort mit Kaukräften. Die provisorischen Prothesen konnten vier Stunden nach der Chirurgie eingegliedert werden. Die definitiven Hybridprothesen setzte man sechs Monate später ein. Den marginalen Knochenverlust beurteilte man mit periapicalen Röntgenbildern, die komputerunterstützt vermessen wurden. Resultate: Bei zwei Implantaten kam es in den ersten zwei Monaten der okklusalen Sofortbelastung zu Misserfolgen. Daraus errechnete sich zwischen dem zwölften und 60. Monat nach Implantation eine kumulative Erfolgsrate aller Implantate von 99.4% (Mittelwert/SD 28.6±14.1 Monate). Der crestale Knochenverlust um die sofortbelastete Implantate war ähnlich wie in anderen Arbeiten mit standartmässig verzögert belasteten Implantaten. Schlussfolgerung: Die Resultate dieser Arbeit lassen vermuten, dass die Rekonstruktion eines zahnlosen Unterkiefers mit okklusal sofortbelasteten Hybridprothesen, abgestützt auf 5 bis 6 Osseotite-Implantaten, eine brauchbare Alternative zu den klassischen Protokollen mit einer verzögerten Belastung darstellt. Resumen Intención: Este trabajo informa sobre los resultados de un estudio prospectivo multicéntrico de prótesis de arco completo implantorretenidas inmediatamente cargadas con extensiones distales (prótesis híbridas) soportadas por implantes Osseotite insertados en mandíbulas edéntulas. Método y Material: Se enroló a 62 pacientes en cuatro centros clínicos. Se insertaron 325 implantes Osseotite y se cargaron oclusalmente de acuerdo con un protocolo de carga inmediata. La prótesis temporal se suministró a las cuatro horas de la cirugía. La prótesis definitiva se suministró a los seis meses. La pérdida de hueso marginal se monitorizó de radiografías periapicales usando una técnica computarizada. Resultados: Dos implantes fracasaron al integrarse dentro de los dos meses de carga oclusal. Se logró un índice de éxito acumulado de implantes del 99.4% durante un periodo de 12 a 60 meses tras el tratamiento (media 28.6±14.1 (SD) meses). La pérdida de hueso crestal alrededor implantes cargados inmediatamente fue similar a aquellos informados para protocolos de carga diferida estándar. Conclusión: Los resultados de este estudio sugieren que la rehabilitación de la mandíbula edéntula por medio de una prótesis híbrida de carga oclusal inmediata soportada por 5,6 implantes Osseotite representa una alternativa viable de tratamiento frente a los protocolos clásicos de carga diferida. [source]