PubMed Health⌕ Search

Biomedical subjects

F Luther

Publications and source records attributed to F Luther.

15 recordsLinked to original sources
PubMed2001

Comparison of lip incompetence by remote video surveillance and clinical observation in children with and without cerebral palsy.

This study aimed to compare two methods of assessing lip position so that an appropriate method could be used to assess whether a relationship existed between lip position and drooling in children with cerebral palsy. This investigation compared the use of a new, remote video surveillance (RVS) technique with direct clinical assessment of lip position by determination of intra- and inter-examiner agreement. Lip position was assessed in both techniques using the Jackson lip classification. Two groups of school children took part: one group suffered from cerebral palsy (CP), but the second group consisted of unaffected individuals. Based on Kappa statistics, intra- and inter-examiner agreements were generally found to be moderate for the individual methods (kappa = 0.48-0.54), whilst agreement between the two methods was found to be good (kappa = 0.68). The results showed moderately good examiner-agreement in the assessment of lip position, using either method and the Jackson lip classification. Consequently, lip position can be assessed by either RVS or direct clinical assessment, the choice depending on the physical circumstances surrounding the assessor and operator preference. However, RVS may offer a more unobtrusive approach.

Adolescent↗
PubMed1998

Orthodontics and the temporomandibular joint: where are we now? Part 1. Orthodontic treatment and temporomandibular disorders.

Orthodontists are concerned about the possibility of a link between the treatment they provide and temporomandibular disorders (TMD). The purpose of this article was to review the literature relating malocclusion and orthodontic treatment to problems of the temporomandibular joint (TMJ) and surrounding anatomy. In Part 1, the relationship of orthodontic treatment to TMD is discussed. In Part 2, the relationship of TMD to malocclusion will be addressed.

Humans↗
PubMed1998

Orthodontic postgraduate training in Germany--have we anything to learn?

In 1996, the authors were able to visit the University Orthodontic Unit in Marburg, Germany. Author FL was able to undertake the visit as part of a discretionary secondment for specialist training and this article describes the author's (FL) experience of orthodontic, postgraduate training there, and highlights differences between training in the U.K. and Germany. In the current climate of change with regard to specialist training, it seemed timely to investigate how training occurs elsewhere in Europe.

Education, Dental, Graduate↗
PubMed1997

A study to determine if changes to an undergraduate orthodontic course improved course quality and student satisfaction.

A study was carried out to determine if changes to the undergraduate orthodontic course at Leeds Dental Institute resulted in increased student satisfaction. The study was based on a questionnaire distributed to dental students comprising statements related to the undergraduate orthodontic course. Questionnaires were distributed in 1993 and 1995 to 2 groups of 4th year undergraduate dental students at the same stage of their course on both occasions. Questions were in the form of 16 statements with which students expressed a level of agreement, ranging from strongly agree to strongly disagree. The numbers of responses at each level of agreement were compared between the 2 groups. Statistical differences were determined using a Mann Whitney-U test. 8 of the 16 statements had more favourable responses in 1995 than in 1993. No statement received a less favourable response in 1995 than in 1993. It is concluded that changes in the undergraduate orthodontic course at Leeds Dental Institute aimed at increased problem-based learning and clinician-led tutorials, have resulted in improved student satisfaction with the teaching.

Consumer Behavior↗
PubMed1996

An in vitro study of the bond strength of light-cured glass ionomer cement in the bonding of orthodontic brackets.

The search to improve the properties of dental adhesives has lead to the development of light-cured glass ionomer cements. Using human teeth in vitro, the present study tested the shear/peel bond strengths of two light-cure materials ('Variglass VLC' and 'Fuji Lining LC') against a 'no-mix' composite orthodontic adhesive ('Right-On') and a chemically cured glass ionomer cement ('Ketac-Cem'). The light-cured materials were found to have an inferior bond strength compared with the two control adhesives. Based on the findings of this study, there is no evidence to support the use of the materials tested for the bonding of orthodontic brackets.

Acid Etching, Dental↗
PubMed1996

The prevalence of malocclusion in children with cerebral palsy.

The prevalence of malocclusion in children with cerebral palsy was studied by comparison with a normal control group. The prevalence of drooling and prematurity was also assessed as well as the degree of mental handicap. Results showed an increased prevalence of malocclusion in children with cerebral palsy. Cerebral palsied children are likely to have a significantly increased overjet (P < 0.001) when compared with normal children. The comparatively small sample sizes precluded firm conclusions being drawn regarding other group comparisons (such as comparing children with cerebral palsy with and without a mental handicap) but there may be a tendency towards the more handicapped group having a Class II malocclusion.

Adolescent↗
PubMed1994

Alveolar bone resorption: a histologic study comparing bone turnover in the edentulous mandible and iliac crest.

The extent of bone formation and resorption in alveolar and basal mandibular bone was measured in 17 edentulous individuals. For comparison, samples of iliac crest bone were also collected because this bone is often used for standard site assessment of skeletal measures of bone turnover. The specimens were processed for undecalcified resin histology. The results indicated extensive bone resorption at the periosteal surface of the alveolar crest, with little evidence of subsequent osteoid formation. Endosteal osteoid formation did occur, which tended to maintain the thickness of the cortical bone at the alveolar crest. Mandibular basal bone displayed a remodeling pattern similar to that seen in the iliac crest.

Aged↗
PubMed1993

A cephalometric comparison of medieval skulls with a modern population.

Thirty-one medieval skulls, mostly dating from the Black Death in 1348, were compared with 32 modern, untreated adults. The medieval population was unusual because the skulls could be so closely dated. Lateral skull radiographs were used for the comparison, based on the method of Seddon (1984). A method error study indicated that the measurements could be treated with reasonable confidence, although possible difficulties with the material are discussed. The findings suggest that the modern group have the longer face and longer palate. The medieval group were found to have more retroclined upper incisors and more proclined lower incisors as well as reduced overbites. The results also suggest changes in mandibular shape over time together with cranial base changes: the modern mandible has a more obtuse gonial angle and is generally longer and thinner. It was not possible to reach a firm conclusion regarding chin prominence. The cranial base saddle angle has become more acute since the medieval period, and the length S-N is greater in the modern group. Depending on interpretation, the skull material could be said to have a more prominent maxilla. Possible reasons for the differences are discussed.

Adolescent↗
PubMed1993

An unerupted canine--an unusual diagnostic problem?

A case is reported in which the eruption of an upper canine was delayed as a result of the presence of a denticle. This remained undiagnosed until the age of 13 years. The paper illustrates the clinical and diagnostic problems associated with denticles in this region due to their position close to, but not actually in, the midline.

Adolescent↗
PubMed1986

Left hepatic vein attenuation for treatment of patent ductus venosus in a dog.

Patent ductus venosus was identified in a young dog. Surgical attenuation of the anomalous vessel was performed by partial ligation of the left hepatic vein. Clinical signs resolved after surgery, and laboratory values returned to normal. Jejunal venous portography, performed 8 weeks after surgery, revealed complete occlusion of the patent ductus venosus, with normal portal vasculature to the right and central divisions of the liver. Atrophy of the left hepatic division resulted.

Animals↗