摘要:

Abdullah A, Sherfudhin H, Omar R, Johansson A. Prevalence of occlusal tooth wear and its relationship to lateral and protrusive contact schemes in a young adult Indian population. Acta Odontol Scand 1994;52:191–197. Oslo. ISSN 0001-6357.The aim of the present study was to investigate the prevalence and severity of occlusal tooth wear and their interrelationships with lateral and protrusive occlusal contact schemes in a young adult Indian population. The material comprised 64 individuals (age:X= 19 years; range, 17–24 years). Assessment of wear was performed by means of a tooth-by-tooth evaluation of casts. Lateral excursive and protrusive contact relationships were recorded at the clinical examination. There was no difference in the degree of wear between women and men. Mean occlusal wear was low for the population studied compared with similarly aged Scandinavians and Saudis. No differences in the severity of wear were found in relation to lateral excursive and protrusive contact schemes. Whereas the low wear experience in the present Indian sample may be related to dietary factors, more must be understood about the various other causes of occlusal tooth wear before its functional interdependence becomes clear.

ISSN:0001-6357    

DOI:10.3109/00016359409029045

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

摘要:

Bjørndal L, Thylstrup A. A comparative histologic study of the pulpdentinal interfxe in undemineralized and demineralized tooth sections. Acta Odontol Scand 1994;52:198-202. Oslo. ISSN 0001-6357This study examines cellular differences between undemineralized and demineralized tooth sections. The material comprised unerupted and partly erupted third molars. After fixation for 24 h, 10to 15-μm ground sections were prepared from half of the tooth, using a cutting-grinding system. The sections were compared with demineralized routine sections from the other half of the tooth. Undemineralized sections showed a better capacity for preserving the tissue integration. Especially between the odontoblast layer and the predentin a low frequency of disjunctions or tears were noted. At this level of examination fixation quality and vacuole frequency (intra-cellular spaces) did not show any differences between the two methods.

ISSN:0001-6357    

DOI:10.3109/00016359409029046

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

摘要:

Oikarinen KS, Nieminen TM. Influence of arch bar splinting on periodontium and mobility of fixed teeth. Acta Odontol Scand 1994;52:203-208. Oslo. ISSN 0001-6357.Altogether 17 patients treated with arch bar splints fixed onto teeth were tested at the time of splint removal and approximately 5 months later. Patients were treated with intermaxillary fixation (IMF) because of either orthognathic surgery (7 patients) or mandibular fractures (10). The CPITN index was used for estimating the periodontal status, and tooth mobility was measured with Periotest. Seven patients in the orthognathic surgery group could also be examined before splinting. Periodontal status, as shown with relative proportions of various CPITN indexes, worsened due to splinting but regained its original level at control examination a minimum of 5 months after splint removal. Since the mean Periotest values did not differ between the first and control examinations in the seven patients undergoing orthognathic surgery, the analysis of the effect of splinting on tooth mobility was performed from the values obtained immediately after splint removal and at control visit. Splinting was shown to increase Periotest values more in female patients, in younger ones, and in those who were splinted for a shorter period. Teeth with the smallest roots showed greater differences in Periotest values than those with large roots, and the greatest differences in mobility were observed in incisors.

ISSN:0001-6357    

DOI:10.3109/00016359409029047

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

摘要:

Li. I, Forberg S, Soremark R. Influence of phytic acid on zinc phosphate cement. Acta Odontol Scand 1994;52:209–213. Oslo. ISSN 0001-6357.The influence of phytic acid on the properties of zinc phosphate cement was studied by adding 2–13 wt% phytic acid to the liquid. Improved mechanical strength and stability were found for some cements prepared from commercial powders when liquids with increased phytic acid content were used. The results indicate that the formation of increased amounts of zinc phytate has a favorable effect on the properties of zinc phosphate cement.

ISSN:0001-6357    

DOI:10.3109/00016359409029048

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

摘要:

Holmlund A, Axelsson S. Temporomandibular joint osteoarthrosis. Correlation of clinical and arthroscopic findings with degree of molar support. Acta Odontol Scand 1994;52:214-218. Oslo. ISSN 0001-6357.The prevalence of temporomandibular joint (TMJ) osteoarthrosis and synovitis was compared in 60 patients with painful chronic locking of the TMJ. Thirty patients had reduced molar occlusion, and as controls, 30 age-matched fully dentate patients were examined. Assessment comprised clinical examination (crepitation), tomography (sclerosis and erosions), and arthroscopy (cartilage involvement) of the TMJ. Arthroscopic signs of osteoarthrosis and synovitis were frequent in both groups. The highest frequency of osteoarthrosis was diagnosed by arthroscopy. With regard to clinical signs and symptoms, tomographic signs of osteoarthrosis, and arthroscopic diagnoses, no statistical differences were found between fully dentate subjects and those with reduced molar occlusion. The results do not support the concept that prevention of TMJ osteoarthrosis is an indication for prosthetic replacement of lost molars.

ISSN:0001-6357    

DOI:10.3109/00016359409029049

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

摘要:

Elander Lindberg N, Lindberg E, Larsson G. Psychologic factors in the etiology of amalgam illness. Acta Odontol Scand 1994;52:219-228. Oslo. ISSN 0001-6357Eleven patients with amalgam illness aged 33–50 years were investigated by psychodynamic methods. Six of them, all women, were dental nurses and hygienists exposed to amalgam/ mercury both from their own dental fillings and occupationally. Four men and one woman were exposed only to amalgam/mercury from their own fillings. Assays of mercury in urine samples and in the ambient air during work routines involving the heaviest exposure indicated that the exposure was far below the levels at which even subclinical symptoms could be indicated by psychometric tests. The psychologic investigation indicated that the symptoms of amalgam illness were psychosomatic. All patients had experienced important psychic traumata in close connection with the first appearance of symptoms. It can be concluded from the psychodynamic dialogues that they had not been able to mourn for a loss in an adequate manner and that the body had been forced to symbolize the great pain in their souls.

ISSN:0001-6357    

DOI:10.3109/00016359409029050

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

摘要:

Soikkonen K, Ainamo A, Wolf J, Xie Q, Tilvis R, Valvanne J, Erkinjuntti T. Radiographic findings in the jaws of clinically edentulous old people living at home in Helsinki, Finland. Acta Odontol Scand 1994;52:229-233. Oslo. ISSN 0001-6357.In the present survey the radiographic findings in the jaws of 124 clinically edentulous old people living at home in Helsinki, Finland, were studied. using panoramic radiography supplemented by intraoral radiographs. Only 9% of the subjects had root remains. Impacted teeth were found in 4%, radiolucent lesions in 3%, and radiopaque findings in 13%. Deviations from normal condylar structure were found in 17% and mucosal thickenings in the maxillary sinuses in 7%. The mental foramen was situated at the top of the residual ridge in 42% of the subjects. Topically situated mental foramen and condylar changes were commoner in women. The radiographic oral health status of the population studied was good.

ISSN:0001-6357    

DOI:10.3109/00016359409029051

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

摘要:

Jokstad A, Mjor IA, Qvist V. The age of restorations in situ. Acta Odontol Scand 1994;52:234–242. Oslo. ISSN 0001-6357.In a cross-sectional survey the age of restorations in situ was recorded in three patient groups. Group A were randomly examined regular attenders, group B were irregular attenders randomly chosen from patient treatment records, and in group C the age of posterior gold and composite resin restorations was recorded in selected regular attenders. The study material included 8310 restorations in group A, 1281 in group B, and 500 restorations in group C. The three materials amalgam, composite, and gold accounted for more than 90% of all restorations. In group A 3.3% of the restorations were scheduled for replacement. The most prevalent reasons for replacement were secondary canes, bulk fractures of the restoration, and tooth fractures. The median age of the failed restorations was fairly similar to the median age of the acceptable restorations in situ among the regular patients (group A). The data indicate median ages of 20 years for gold restorations, 12–14 years for amalgam restorations, and 7–8 years for composite resin restorations. The restoration ages were influenced by the type and size of the restoration, the restorative material used, and possibly also the intraoral location of the restorations.

ISSN:0001-6357    

DOI:10.3109/00016359409029052

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

摘要:

Ainamo A, Soikkonen K, Wolf J, Siukosaari P, Erkinjuntti T, Tilvis R, Valvanne J. Dental radiographic findings in the elderly in Helsinki, Finland. Acta Odontol Scand 1994;52:243-249. Oslo. ISSN 000145357.A total of 169 dentate persons, aged 76, 81, and 86 years, living at home in Helsinki, Finland, were examined by means of panoramic radiography supplemented by intraoral radiographs. The older the age group, the fewer teeth remained. Altogether 75% of the subjects had radiographically detectable caries. A high proportion of the carious teeth (62%) was found in a relatively small number (24%) of subjects. The number of carious teeth and their percentage of the total number of teeth were greater in the older age groups. The proportion of endodontically treated teeth was 19% in the 76-year-olds and 26% in the 86-year-olds. Of the subjects 41% had periapical periodontitis, which was commoner in root-filled teeth (18%) than in other teeth (4%). Caries and periapical radiolucent and radiopaque findings were commoner in men. Vertical bone pockets (3 mm or deeper) were found in 51% and furcation lesions in 28% of the subjects. Compared with earlier Finnish studies, the results indicate an improving oral health status among elderly Finns.

ISSN:0001-6357    

DOI:10.3109/00016359409029053

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor

摘要:

Dahlstrom L, Keeling SD, Fricton JR, Galloway Hilsenbeck S, Clark GM, Rugh JD. Evaluation of a training program intended to calibrate examiners of temporomandibular disorders. Acta Odontol Scand 1994;52:250-254. Oslo. ISSN 0001-6357.The adequacy of a training program intended to calibrate examiners of temporomandibular disorders (TMD) was evaluated. Eight examiners blindly rated 12 subjects with various TMD signs and symptoms after participating in a 5-h intense training procedure. Some examiners had earlier experience of TMD examinations, and some were newly trained. The Craniomandibular Index was used as the assessment instrument. Agreement within the whole group of examiners was low. Training tended to increase the probability of correctly registering signs. It is concluded that the program was not sufficient to create reliability among multiple examiners. More extensive training, not only to a standard but also between the different examiners, appears necessary. Revision of the examination technique is suggested, and recommendations for strengthening the calibration procedures are made.

ISSN:0001-6357    

DOI:10.3109/00016359409029054

出版商:Taylor&Francis    

年代:1994

数据来源: Taylor