Occurrence and severity of enamel decalcification adjacent to bracket bases and sub-bracket lesions during orthodontic treatment with two different lingual appliances
| Autor: | Dirk Wiechmann, Elisabeth Klang, Michael Knösel, Hans-Joachim Helms |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Adult
Adolescent Tooth Movement Techniques Orthodontic Brackets Dentistry Orthodontics Esthetics Dental Young Adult 03 medical and health sciences 0302 clinical medicine Tongue stomatognathic system Humans Orthodontic Appliance Design Medicine 030212 general & internal medicine Child Dental Enamel Tooth Demineralization White Spot Lesion Permanent teeth Enamel paint Bone decalcification business.industry Significant difference Bracket Dental Bonding 030206 dentistry Incisor stomatognathic diseases medicine.anatomical_structure visual_art visual_art.visual_art_medium Original Article Female business |
| Zdroj: | The European Journal of Orthodontics |
| ISSN: | 1460-2210 0141-5387 |
| Popis: | Summary Background: Using lingual enamel surfaces for bracket placement not only has esthetic advantages, but may also be suitable in terms of reducing frequencies of enamel decalcifications. Objective: To test the null-hypothesis that there is no significant difference in enamel decalcification or cavitation incidence adjacent to and beneath bracket bases between two lingual multi-bracket (MB) appliances that are different in terms of design, material composition, and manufacturing technology (group A: WIN, DW-LingualSystems; group B: Incognito, 3M-Unitek), taking into account patient- and treatment-related variables on white spot lesion (WSL) formation. Methods: Standardized, digital, top-view photographs of 630 consecutive subjects (16214 teeth; n Incognito = 237/6076 teeth; n WIN = 393/10138 teeth; mean age: 17.47±7.8; m/f 43.2/56.8%) with completed lingual MB treatment of the upper and lower permanent teeth 1–7 were screened for decalcification or cavitation adjacent to and beneath the bracket bases before and after treatment, scored from 0 to 7. Non-parametric ANOVA was used for main effects ‘appliance type’, ‘gender’, ‘treatment complexity’, ‘grouped age’ (≤16/>16 years), and ‘treatment duration’ as covariable, at an α-level of 5%. Results: About 2.57% [5.94%] of all teeth in group A [B] developed decalcifications. Subject-related incidence was 9.59% [16.17%] for upper incisors in group A [B], and 12.98% [25.74%] for all teeth 16–46. There were significant effects by gender, age, and treatment duration. Conclusion: The null-hypothesis was rejected: sub-bracket lesions were significantly less frequent in group A, while frequencies of WSL adjacent to brackets were not significantly affected by appliance type. In view of the overall low incidences of lingual post-orthodontic white-spot lesions, the use of lingual appliances is advocated as a valid strategy for a reduction of enamel decalcifications during orthodontic treatment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|