Midwest China Oral History Interviews

Early Life: teachers at American School-Kikungshan; memories of civil unrest in China; memorable missionaries; values gained from China experience; adjustments to America. Return to China: comparison of China of his childhood to China 1976; disappointing aspects of trip; evidence of the Christian church\u27s existence in PRC; description of Honan; description of pro-government political demonstration; the state of medicine in China; impressions of the new Chinese family; evaluation of contributions of medical missionaries; lessons learned from missionary experience; the future of mission work in China.https://digitalcommons.luthersem.edu/china_histories/1035/thumbnail.jp

3-Year prospective multicenter study on one-stage implant surgery and early loading in the edentulous mandible

Background: The long-term success rates achieved in dental implantology suggest that flexibility might well exist within the various implant systems to a degree that an altered protocol (ie, one-stage surgery and immediate or early loading) can be performed under controlled conditions. However, before variations of the protocol can be considered for general use, they must be subjected to critical analysis, particularly with respect to the predictability of osseointegration, alteration of soft tissue barrier, and relative change in bone height around the implants. Purpose: The aim of this prospective multicenter study was to evaluate implant survival and periimplant conditions around endosseous implants placed in a one-stage surgical procedure and early loading. Materials and Methods: A total of 170 implants were placed in 40 patients with mandibular edentulism and were functionally loaded within 6 weeks with overdentures (n = 30) or fixed prostheses (n = 10). All patients and prosthetic constructions were evaluated according to a standardized protocol during 3 years of follow-up. Cumulative implant survival rates were calculated, and implant loss in relation to implant size and bone quality and quantity were evaluated. Furthermore, the protocol included assessment of clinical (plaque and bleeding scores, prosthesis stability) and radiographic parameters. Results: Over a period of 3 years, the implant survival rate was 93% for both implants and prostheses (fixed or removable). No implants were lost after the first year of loading. The periimplant tissues were in a healthy condition. Mean marginal bone resorption from the time of loading to the 3-year follow-up was 0.41 mm (SD 0.52). Conclusions: From this study it may be concluded that early loading results in good implant survival and proper periimplant health in edentulous mandibles.</p

Implants ostéo-intégrés chez l'adolescent. Une solution de remplacement des dents manquantes ?

Cette étude est consacrée à l'ostéo-intégration d'implants utilisés dans des cas de dents manquantes (agénésies ou traumatismes). Dans ce but, un échantillon de 15 adolescents, d'un âge moyen de 15 ans et 4 mois, a été constitué (de 13 ans et 2 mois à 19 ans et 4 mois). Des implants (n = 27) du type Bränemark ont été installés au moment où toutes les dents permanentes étaient évoluées, à l'exclusion des troisièmes molaires. Des contrôles radiographiques et biométriques ont été effectués tous les ans chez ces patients, qui ont été suivis pendant au moins 3 ans. Il n'y a pas eu de pertes d'implant. Seules des lyses osseuses mineures ont été observées au niveau de l'implant alors que les faces proximales des dents adjacentes montraient quelques pertes osseuses dans certains cas. Chez les patients qui disposaient d'une croissance résiduelle, une infraclusion de la restauration implantaire a été remarquée. Donc, seules les maturations squelettique et dentaire des patients doivent être prises en considération, et non leur âge chronologique, pour éviter que la prothèse implantaire se trouve en infraclusion. En outre, il est important de préparer un espace mésio-distal suffisant pour l'implant, de telle manière que tout risque d'atteinte osseuse soit écarté

Endometrial destruction by thermal coagulation : Evaluation of a new form of treatment for menorrhagia

Objective. To report the first clinical evaluation of a new balloon endometrial, thermal destruction system Cavaterm®, for outpatient treatment of menorrhagia. Design. To elucidate possible technical problems during treatment, to evaluate how the patients tolerated the treatment and to judge which patients were suitable for this form of treatment. Main outcome measures. Measurements of bleeding volumes in pads and tampons before and after treatment were performed as well as subjective evaluation by bleeding charts. Patients also estimated their degree of satisfaction. Setting. Gynaecology department at a university hospital. Subjects. 36 patients under 52 pears of age with menorrhagia, without suspicion of intracavitary pathology including malignancy. Results. No procedure-related complications occurred. The patients tolerated the treatment well. There was a significant reduction in measured bleeding volumes in pads and tampons, collected during one menstruation, 2-7 months after treatment compared with measurements before treatment. Four patients subsequently underwent hysterectomy and should not have been included in the study (two with pedunculated myoma and one with a septum; the fourth showed premalignant endometrial changes in the curettage preceding the treatment). At 18-28-month follow up, 29 of the suitable patients (91%) reported a significant reduction in bleeding and another three patients reported reduced but still profuse bleeding compared with pretreatment; 88% (28/32) rated the treatment results as excellent, and a further 9% (3/32) as good. Conclusions. We found the Cavaterm® system for endometrial destruction to be safe, efficient and easy to use

Bacterial profiles and proteolytic activity in peri-implantitis versus healthy sitesBacterial profiles and proteolytic activity in peri-implantitis versus healthy sites

Peri-implantitis is a biofilm-induced destructive inflammatory process that, over time, results in loss of supporting bone around an osseointegrated dental implant. Biofilms at peri-implantitis sites have been reported to be dominated by Gram-negative anaerobic rods with a proteolytic metabolism such as, Fusobacterium, Porphyromonas, Prevotella and Tannerella, as well as anaerobic Gram-positive cocci. In this study, we hypothesized that protease activity is instrumental in driving bone destruction and we therefore compared the microbial composition and level of protease activity in samples of peri-implant biofluid (PIBF) from 25 healthy subjects (H group) and 25 subjects with peri-implantitis (PI group). Microbial composition was investigated using culture techniques and protease activity was determined using a FITC-labelled casein substrate. The microbial composition was highly variable in subjects both in the H and PI groups but one prominent difference was the prevalence of Porphyromonas/Prevotella and anaerobic Gram positive cocci which was significantly higher in the PI than in the H group. A subgroup of subjects with peri-implantitis displayed a high level of protease activity in the PIBF compared to healthy subjects. However, this activity could not be related to the presence of specific bacterial species. We propose that a high level of protease activity may be a predictive factor for disease progression in peri-implantitis. Further longitudinal studies are however required to determine whether assessment of protease activity could serve as a useful method to identify patients at risk for progressive tissue destruction

Numerical calculations of temperature distribution resulting from intracavitary heating of the uterus

Objective To estimate, using numerical calculations, the depth of tissue damage in the uterus following balloon thermal endometrial destruction. Design A parameter, therapeutic depth, was defined. This was the maximum depth into the uterine myometrium, from the uterine cavity, at which a predefined temperature was reached after a certain time and with a constant intracavitary temperature. Setting Departments of radiation physics and gynaecology at a university hospital. Results After 30 min of treatment with an intracavitary temperature of 75°C, the maximum depth into the myometrium at which the tissue had been exposed to a temperature of 55°C, when blood flow was neglected, was 8.9 mm. Taking into account blood flow the depth was 3.4 mm, and including the pressure because of the balloon it was 5.6 mm. With the inclusion of a local increase in blood flow because of elevated tissue temperature the depth was 4.4mm. Finally when damage to blood vessels due to coagulation was also accounted for, the depth was 5.2mm. The therapeutic depth decreased only slightly when the treatment time was shortened to 15 min. Conclusions Numerical calculations provide a basis for estimation of the optimal intracavitary temperature and treatment time when performing thermal endometrial destruction by means of a balloon catheter