| 1. |
- Dimberg, Lillemor, et al.
(författare)
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Prevalence of malocclusion traits and sucking habits among 3-year-old children
- 2010
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Ingår i: Swedish Dental Journal. - 0347-9994. ; 34:1, s. 35-42
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Tidskriftsartikel (refereegranskat)abstract
- The aim of the present study was to evaluate the prevalence of malocclusion traits and sucking habits among 3-year-old children. A sample of 457 3-year-old children (234 girls and 223 boys) was obtained from three Public Dental Health clinics in Orebro County Council, Sweden. Data from clinical examination and a questionnaire were used to determine malocclusion traits, sucking habits, snoring and breathing pattern including nocturnal breathing disturbances. The results showed that 70% had one or more malocclusion traits at 3 years of age. The most common malocclusion traits were anterior open bite (50%), Class II occlusion (26%), increased overjet (23%) and posterior crossbite (19%). The prevalence of sucking habit was 66% and dummy sucking was dominating and in connection with more malocclusion traits than finger/thumb sucking. A significant association was found between the sucking habits and the most prevalent malocclusions, anterior open bite, Class II occlusion, increased overjet and posterior crossbite. In conclusion, the prevalence of malocclusion traits in 3-year-old children was high. Sucking habits was highly prevalent and dummy sucking resulted in more malocclusion traits than finger/thumb sucking did.
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| 2. |
- Edman Tynelius, Gudrun, et al.
(författare)
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Evaluation of orthodontic treatment after 1 year of retention - a randomized trial
- 2010
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Ingår i: European Journal of Orthodontics. - : Oxford University Press (OUP). - 0141-5387 .- 1460-2210. ; 32:5, s. 542-547
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to use a randomized controlled trial methodology to evaluate and compare three different retention methods. The capacity of the retention methods to retain orthodontic treatment results was in this first phase analysed on a short-term basis, i.e. after 1 year of retention. The subjects were recruited from adolescents undergoing fixed appliance treatment at an orthodontic clinic in the National Health Service (NHS) in Sweden between 2001 and 2007. Seventy-five patients (45 girls and 30 boys with a mean age of 14.4 years at the start of retention) were randomized into three retention systems; a vacuum-formed retainer in the maxilla and bonded canine-to-canine retainer in the mandible (group V-CTC), a vacuum-formed retainer in the maxilla combined with stripping of the 10 proximal surfaces of the lower mandibular anterior teeth (group V-S), and a prefabricated positioner covering the teeth in the maxilla and mandible (group P). The main outcome measures were: Little's irregularity index (LII), intercanine and intermolar width, arch length, overjet, and overbite. Registrations were made before orthodontic treatment, when the fixed orthodontic appliance was removed, and after 12 months in retention. Differences in means between groups were tested by one-way analysis of variance. After 1 year of retention, no clinically significant difference in retention capacity was found between the three retention methods. Small but significant differences (P < 0.05) were observed between the V-CTC and V-S groups regarding mandibular canine width, mandibular arch length, and overbite. In group P, two patients failed to co-operate.
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| 3. |
- Larsson, Pernilla, et al.
(författare)
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Development Of An Orofacial Aesthetic Scale In Prosthodontic Patients
- 2010
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Objectives: Despite the interest and need to assess orofacial aesthetics in prosthodontic patients, few self-report instruments are available to measure this construct and none describes how prosthodontic patients perceive the appearance of patients' face, mouth, teeth, and dentures. We report development of the Orofacial Aesthetic Scale (OAS), in particular its conceptual framework, how questionnaire items were generated, and the scale's measurement model. Methods: After test conceptualization, we solicited aesthetic concerns in 17 prosthodontic patients who were asked to evaluate their photographs. A focus group of 8 dental professionals reduced the initial number of concerns/items and decided on an item response format. Pilot testing in 9 subjects generated the final instrument, the OAS. We performed exploratory factor analysis to investigate OAS dimensionality and item analysis to investigate item difficulty and discrimination in 119 subjects. Results: Prosthodontic patients generated an initial 28 aesthetic concerns. These items were reduced to 8 preliminary representative items that were subsequently confirmed in pilot testing. Item analysis supported these 8 items assessing appearance: Face, Profile, Mouth, Tooth alignment, Tooth shape, Tooth color, Gums, as well as Overall impression measured on an 11-point numeric rating scale (0 ”Very dissatisfied”, 10 ”Very satisfied” with appearance). Exploratory factor analysis found only 1 factor and high positive loadings for all items (.73 to .94) on the first factor, supporting OAS' unidimensionality. Conclusion: The Orofacial Aesthetic Scale, developed especially for prosthodontic patients, is a brief questionnaire that assesses orofacial aesthetic impacts with freely available Swedish and English versions.
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| 4. |
- Larsson, Pernilla, et al.
(författare)
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Development of an Orofacial Esthetic Scale in Prosthodontic Patients
- 2010
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Ingår i: International Journal of Prosthodontics. - : Quintessence Publishing Co Ltd. - 0893-2174 .- 1139-9791. ; 23:3, s. 249-256
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: Despite the interest and need to assess orofacial esthetics in prosthodontic patients, few self-reporting instruments are available to measure this construct, and none describe how prosthodontic patients perceive the appearance of their face, mouth, teeth, and dentures. The development of the Orofacial Esthetic Scale (DES) is reported in this article, in particular its conceptual framework, how questionnaire items were generated, and the scales measurement model. Materials and Methods: After test conceptualization, the authors solicited esthetic concerns from 17 prosthodontic patients by asking them to evaluate their own photographs. A focus group of 8 dental professionals reduced the initial number of concerns/items and decided on an item response format. Pilot testing in 9 subjects generated the final instrument, the DES. Exploratory factor analysis was performed to investigate DES dimensionality and item analysis to investigate item difficulty and discrimination in 119 subjects. Results: Prosthodontic patients generated an initial 28 esthetic concerns. These items were reduced to 8 preliminary representative items that were subsequently confirmed during pilot testing. Analysis supported 8 items assessing appearance: face, profile, mouth, tooth alignment, tooth shape, tooth color, gums, and overall impression, measured on an 11-point numeric rating scale (0 = very dissatisfied, 10 = very satisfied). Exploratory factor analysis found only 1 factor and high positive loadings for all items (.73 to .94) on the first factor, supporting the unidimensionality of the DES. Conclusions: The OES, developed especially for prosthodontic patients, is a brief questionnaire that assesses orofacial esthetic impacts.
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| 5. |
- Lucander, Henriette, et al.
(författare)
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The structure of observed learning outcome (SOLO) taxonomy : a model to promote dental students’ learning
- 2010
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Ingår i: European journal of dental education. - : John Wiley & Sons. - 1396-5883 .- 1600-0579. ; 14:3, s. 145-150
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Tidskriftsartikel (refereegranskat)abstract
- Selective memorising of isolated facts or reproducing what is thought to be required – the surface approach to learning – is not the desired outcome for a dental student or a dentist in practice. The preferred outcome is a deep approach as defined by an intention to seek understanding, develop expertise and relate information and knowledge into a coherent whole. The aim of this study was to investigate whether the structure of observed learning outcome (SOLO) taxonomy could be used as a model to assist and promote the dental students to develop a deep approach to learning assessed as learning outcomes in a summative assessment. Thirty-two students, participating in course eight in 2007 at the Faculty of Odontology at Malmo¨ University, were introduced to the SOLO taxonomy and constituted the test group. The control group consisted of 35 students participating in course eight in 2006. The effect of the introduction was measured by evaluating responses to a question in the summative assessment by using the SOLO taxonomy. The evaluators consisted of two teachers who performed the assessment of learning outcomes independently and separately on the coded material. The SOLO taxonomy as a model for learning was found to improve the quality of learning. Compared to the control group significantly more strings and structured relations between these strings were present in the test group after the SOLO taxonomy had been introduced (P < 0.01, one tailed test for both results). The SOLO taxonomy is recommended as a model for promoting and developing a deeper approach to learning in dentistry.
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| 6. |
- Paulsson-Björnsson, Liselotte, et al.
(författare)
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Permanent tooth-crown dimensions in Prematurely born children (Portoroz)
- 2010
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Ingår i: Abstract book. 86th Congress of the European Orthodontic Society.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- AIM: According to the literature, the scientific evidence is insufficient to answer the question as to whether premature birth causes altered tooth-crown dimensions. The aim of this study was to evaluate permanent tooth-crown dimensions in prematurely born children and to compare the findings with full-term born controls. SUBJECTS AND METHOD: White pre-term children, 8 to 10 years of age, were selected from the Swedish Medical Birth Register. One group consisted of 36 extremely pre-term children (born before the 29th gestational week), and the other 37 very pre-term children (born during gestational weeks 29 to 32). The pre-term children were compared with a control group of 41 full-term children, who were matched for gender, age, nationality and living area. Clinical examinations were undertaken and study casts and panoramic radiographs were obtained for each child. The permanent maxillary and mandibular first molars, central incisors and laterals were measured with a digital sliding calliper on the study casts. The tooth-crowns were measured both mesiodistally and buccolingually. The examiner conducting the measurement analysis was unaware of the subject grouping. RESULTS: The maxillary and mandibular first molars were smaller mesiodistally and buccolingually (P ≤ 0.01) whereas the central incisors and lower laterals were smaller mesiodistally (P ≤ 0.02) in the extremely pre-term group compared with the full-term group. A reduction in tooth size of 5-8 per cent was found between the extremely pre-term group and the full-term group. Furthermore, the maxillary first molars and mandibular left first molar were also smaller mesiodistally (P ≤ 0.035) in the extremely pre-term group compared with the very pre-term group. CONCLUSION: Premature birth is associated with reduced toothcrown dimensions of the permanent teeth, and the more preterm the birth the smaller the tooth-crown dimensions.
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| 7. |
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| 8. |
- Petrén, Sofia, et al.
(författare)
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Stability of Unilateral Posterior Crossbite Correction in the Mixed Dentition - a 3-year Follow-Up
- 2010
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Ingår i: Abstract book.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Stability of Unilateral Posterior Crossbite Correction in the Mixed Dentition - a 3-year Follow-Up. Aim: To compare and evaluate long-term stability of crossbite correction with Quad Helix or expansion plate in the mixed dentition. Methods: In this RCT-study 35 patients with unilateral posterior crossbite were randomized to be treated with either Quad Helix or expansion plate. The inclusion criteria were: mixed dentition, unilateral posterior crossbite, no sucking habits or previous orthodontic treatment. Stability was evaluated after 3 years by study cast measurements. Twenty subjects with normal occlusion were included as controls. Success rate, maxillary and mandibular transverse dimensions, overjet and overbite were registered. Results: Stability was equal for the two treatment methods. Small, albeit significant, differences between the groups were assessed with reference to transverse dimensions. No significant difference was seen for overjet and overbite. Conclusions: The long-term stability of posterior crossbite correction with Quad helix and expansion plate was equal.
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