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Biomedical subjects

A Stenvik

Publications and source records attributed to A Stenvik.

At least 19 recordsLinked to original sources
PubMed1993

Concern for dental appearance among Norwegian young adults in region with low uptake of orthodontic treatment.

The purpose of the present study was to examine orthodontic concern among orthodontically untreated young adults living in an area where the relative number of children receiving treatment was only 15-20% and to compare orthodontic concern among these individuals with that of untreated persons from an area with a higher treatment frequency. All the subjects were clinically examined and impressions for dental study casts, radiographs and photographs were taken. The subject's occlusion was classified according to two methods: 1) allocation to one of four groups according to the national Need for Orthodontic Treatment Index (NOTI), and 2) allocation to one of three groups according to presence or absence of six Anterior Occlusal Traits (AOT). Frequencies of NOTI scores demonstrated that in the study group more individuals were in need of treatment relative to the comparison group. Reported concern was at the same level in both groups, and significantly related to NOTI and AOT scores. The individuals in the area with the low treatment frequency were generally less aware of their anterior traits compared to the individuals in the area with a higher treatment frequency. The results indicated that a long-term low uptake of orthodontic treatment among children in the particular area was not accompanied by a similar increase in concern about own dental appearance in early adulthood.

Adolescent↗
PubMed1992

Perception of malocclusion in 11-year-old children: a comparison between personal and parental awareness.

In orthodontic counselling an understanding of how individuals perceive their occlusal features is important to ensure effective communication and for provision of adequate advice on treatment need. The purpose of the present study was to assess personal and parental awareness of malocclusion in children, and to examine whether agreement existed between children and their parents on assessments of malocclusion traits. Of 104 randomly selected fourth-grade children 99 presented themselves at a public dental clinic. Ninety-three accompanying parents attended. Awareness was assessed by comparing the opinion of parents and children on the presence or absence of anterior malocclusion with direct measurements on dental study casts. The subjects' abilities to identify a polaroid of the child's dentition in a panel of 17 alternative photographs were also used as a measure of awareness. The findings revealed a moderate level of awareness among both the children and their parents. About half of the children and the parents identified the child's photograph on the first attempt. About three-quarters of the traits recorded as marked/severe malocclusion and about half of the mild/moderate traits were recognized. A significant association existed between the number of correct reports on traits given by the children and the parents. However, agreement across professional, child, and parental assessments varied for the different traits. The results indicated that the individual's comprehension of professional terms may be unclear and that professionally defined cut-off points often do not coincide with norms existing within the actual family unit.

Attitude to Health↗
PubMed1992

A new Norwegian index of orthodontic treatment need related to orthodontic concern among 11-year-olds and their parents.

A new index of orthodontic treatment need was introduced in Norway in 1990. On a morphologic and functional basis the four groups very great (A), great (B), obvious (C) and little/no (D) need were defined for social insurance refunding. The purpose of the present study was to investigate to what extent the new index corresponded with orthodontic concern among potential orthodontic patients and their parents. Of 104 randomly selected fourth grade children, 99 (48 girls, 51 boys, mean age 10.7 yr) presented themselves for clinical examination and interview. One parent was asked to accompany the child, and 93 parents attended. On the basis of clinical examination, morphologic measurements on study casts, and X-rays, the children were allocated to one of the four groups defined by the index. In separate questionnaires the children and the parents were asked to assess satisfaction with own/child's dental arrangement and desire for orthodontic treatment. The interview data were transformed into a composite measure representing orthodontic concern. The results indicated that orthodontic concern was significantly related to index group. For the individuals who expressed concern the new index seemed to be meaningful for allocation of public subsidies, as most individuals (85%) who expressed concern exhibited malocclusions fulfilling the criteria for receiving public subsidies of treatment costs. However, more than 50% of the individuals allocated to group B (great need) did not experience a need for treatment.

Adolescent↗
PubMed1991

Perception of personal dental appearance in young adults: relationship between occlusion, awareness, and satisfaction.

Information about the individual perception of a patient's own occlusion is considered of importance in orthodontics. One hundred thirty young adults (mean age, 18.1 years) were clinically examined and interviewed with the purpose of relating self-awareness and satisfaction to the actual occlusal status and determining whether dissatisfaction is based on realistically perceived anomalies. From study casts taken at the time of examination, six anterior traits were recorded as either malocclusion, minor deviation, or near-ideal occlusion according to two sets of criteria. Self-awareness was assessed by analyzing agreement between the subjects' reports on the presence of the six traits and the corresponding recordings. Satisfaction was evaluated from three questions with fixed alternative answers. The majority of the young adults (63%) were characterized as having near-ideal occlusion or only minor deviations. Only mild and moderate malocclusions were present in the sample since severe malocclusions are routinely treated during childhood. The subjects were generally aware of anterior traits. Almost all the subjects (98%) with near-ideal occlusion or minor deviations expressed satisfaction. Malocclusion was present in 14 of the 16 subjects who were dissatisfied, and dissatisfaction was based on realistically perceived anomalies. However, traits rated as malocclusion were present in 30% of the satisfied subjects, which may in part be explained by the mild degree of malocclusion in the sample. Awareness of occlusal traits varied among the satisfied subjects.

Adolescent↗
PubMed1991

Orthodontically treated young adults: awareness of their own dental arrangement.

Orthodontic treatment goals are generally based upon professional ideals of function, aesthetics, and stability. In order to evaluate whether the professional treatment goals are meaningful to the patients, awareness of their own occlusion was studied in 80 orthodontically treated individuals (mean age 18.3 years). By comparing the treated patients to a control group of 50 untreated individuals (mean age 17.8 years) the effect of the treatment experience on the level of awareness was also examined. Awareness was assessed by comparing the subjects' answers to six questions about their own dental arrangement, to recordings on study casts according to two sets of criteria. These criteria defined malocclusion and minor deviations in tooth position. The validity of the method was tested by asking the subjects to identify their own teeth among 18 dental photographs. Almost two-thirds of the treated subjects described their teeth without making mistakes according to the malocclusion criteria. When the minor deviation criteria were applied, one third answered all the six questions correctly and two-thirds made not more than one mistake. Compared to the control group no significant differences existed as most untreated individuals also gave accurate descriptions. Eighty-two per cent of the tested subjects identified their own photo on the first attempt. Professional treatment goals seem to be justified by the high level of dental awareness in young adults, and the findings indicate that the treatment per se does not affect perceptual accuracy.

Adolescent↗
PubMed1991

The efficacy of two-stage titanium implants as orthodontic anchorage in the preprosthodontic correction of third molars in adults--a report of three cases.

Orthodontic movement of teeth is often required to satisfactorily treat a variety of oral rehabilitation problems. Considerable limitations in the clinical application of orthodontic treatment may result from the lack of teeth suitable for anchorage. Three patients with edentulous posterior segments are presented illustrating how implants can be utilized for preprosthodontic correction of impacted third molars rendering them suitable as bridge abutments. The patients have been followed for 8-10 years. Two-stage titanium implants were used as orthodontic anchorage as no dental anchorage was available. Edgewise orthodontic mechanics were used to move the third molars mesially with forces up to 2.5 N (about 250 g). No movement of the implants occurred and they were radiologically and clinically intact at the end of the orthodontic loading and were, therefore, subsequently used as bridge abutments.

Adolescent↗
PubMed1990

Validity of the radiographic assessment of ankylosis. Evaluation of long-term reactions in 10 monkey incisors.

The accuracy and sensitivity of radiographic assessments of reactive processes in dental tissues were evaluated by comparison of radiographs and histologic sections. Experimental lesions inflicted on the roots of 10 monkey incisors had been observed by means of serially obtained radiographs over a period of 315 to 370 days. The material was used for evaluation of radiographic assessment of ankylosis. For comparative purposes, assessment of the experimental lesion penetrating to the pulp and periapical radiolucency was added. True and falsely positive or negative recordings formed the basis for calculation of the accuracy and sensitivity of the radiographic assessment. The sensitivity, or the observers' ability to detect the actual changes, was high for pulp penetration, intermediate for inflammation, and low for ankylosis.

Animals↗
PubMed1990

[Does orthodontic treatment affect craniofacial growth?].

Orthodontic treatment can influence growth of maxilla and mandible, and give better harmony of the skeletal components of the face. However, choice of an inappropriate treatment method can deteriorate the balance of the upper and lower face. It is probably easier to influence the sutural growth than the growth of the condylar cartilage. It is possible both to increase the width of the maxilla and to increase, respectively decrease, forward growth of the maxilla. Even if the amount of growth in the condyle cannot be significantly influenced, the position of the mandible in relation to the rest of the face can be indirectly influenced by control of the sutural growth.

Child↗
PubMed1989

Experimental transplantation of teeth to simulated maxillary alveolar clefts.

A total of 14 teeth were transplanted to simulated alveolar clefts in 5 monkeys. Autogenous cancellous bone was grafted to the cleft together with the tooth in ten instances. Healing processes were observed 216 or 271 days postoperatively. Another group of four teeth were transplanted in the cleft areas 133 days after bone grafting. These teeth were observed for 138 days before sacrifice. Radiological and histological findings support previous reports on adverse effects to dental tissues when placed in direct contact with fresh transplanted bone. Root resorption and ankylosis occurred to a large extent. Establishment of a normal periodontal membrane could, however, be observed when the tooth was transplanted to an area grafted 4 months previously. An interval before tooth transplantation allowing the cancellous graft to organize and bone to remodel seems to be indicated.

Alveolar Process↗
PubMed1985

Incisor and jaw relationship in 27 persons with osteogenesis imperfecta.

The incisor relation and craniofacial morphology, as evaluated from lateral cephalograms, were studied in 14 women and 13 men with osteogenesis imperfecta. A negative overjet was found in one woman and five men, and for the total material a mesial basal jaw relationship was observed. Data for both women and men indicated that skeletal discrepancies had been partially compensated for by the incisor inclination. Probably, persons with osteogenesis imperfecta may be regarded as a potential high-risk group for development of malocclusion.

Adolescent↗