INTRODUCTION: The primary aim of this study was to assess the amount and long-term stability of orthodontically created bone in patients with agenesis of maxillary lateral incisors after canine distalization. The secondary aim was to explore the impact of patient age on the process of alveolar bone resorption. METHODS: A group of patients with agenesis of the maxillary permanent lateral incisor was examined at 4 time points: the beginning of orthodontic treatment (T1, n = 80), the end of treatment (T2, n = 80), 2-5 years after treatment (T3, n = 79), and 12-15 years after treatment (T4, n = 32). The width of the edentulous alveolar bone was measured from study casts at the level of the bone ridge (point A) and 5 mm apically from the alveolar ridge (point B). Alveolar ridge height was also recorded using panoramic radiographs at all time points. Paired t tests, 2-sample t tests, Friedman test with Bonferroni correction, Spearman`s correlation, and linear regression tests were used to analyze the data. RESULTS: The alveolar ridge width was reduced by an average of 0.44 mm at point A and 0.47 mm at point B during the 12-15 years after treatment (T2-T4) and by 0.21 mm and 0.19 mm during the last 10 years (T3-T4). The alveolar ridge height was reduced by 0.59 mm between T2 and T4 and by 0.05 mm between T3 and T4. All reductions in ridge width and height were statistically significant (P <0.05). However, no significant correlation was observed between patient age and changes in alveolar bone parameters (P >0.05). CONCLUSIONS: Although the reductions in alveolar ridge dimensions were statistically significant, the orthodontically created bone after canine distalization remained stable 12-15 years after treatment in both the horizontal and vertical dimensions. Patient age did not significantly influence alveolar bone changes.
- MeSH
- anodoncie * terapie diagnostické zobrazování MeSH
- čelist bezzubá MeSH
- dítě MeSH
- dospělí MeSH
- lidé MeSH
- maxila * MeSH
- mladiství MeSH
- mladý dospělý MeSH
- následné studie MeSH
- osteogeneze fyziologie MeSH
- posun zubů * metody MeSH
- processus alveolaris * diagnostické zobrazování patologie abnormality MeSH
- rentgendiagnostika panoramatická MeSH
- resorpce alveolární kosti diagnostické zobrazování MeSH
- řezáky * abnormality diagnostické zobrazování MeSH
- věkové faktory MeSH
- Check Tag
- dítě MeSH
- dospělí MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- MeSH
- extrakce zubů metody MeSH
- fixní ortodontický aparát MeSH
- kefalometrie metody MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- moláry abnormality diagnostické zobrazování MeSH
- otevřený skus * diagnostické zobrazování diagnóza terapie MeSH
- posun zubů * klasifikace ošetřování MeSH
- retrospektivní studie MeSH
- výsledek terapie MeSH
- Check Tag
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- MeSH
- fixní ortodontický aparát MeSH
- hluboký skus terapie MeSH
- lidé MeSH
- malokluze * terapie MeSH
- posun zubů metody MeSH
- Check Tag
- lidé MeSH
- ženské pohlaví MeSH
- Publikační typ
- kazuistiky MeSH
When closing space during the treatment of missing lateral incisors with mesialization of canine and lateral segments an orthodontist should gradually adjust shape of the teeth by grinding. Since the beginning of the treatment the canine tip grinding should be carried out not only occlusally but also approximally, palatally and vestibularly in the incisal fourth of the crown. Thus we achieve shortened canine, its vestibulooral narrowing, incisal edge, and regular position of the canine in the place of lateral incisor. Too wide canine prevents adequate intercuspation of lateral segment of dentition. Grinding the canine palatally provides incisal guiding without interfering of palatal surface of mesialized canine and appropriate overjet with light contact between front teeth. If the esthetic restoration of canine into the shape of lateral incisor is planned, the correct approximal grinding of the canine (after consultation with esthetic dentist) provides desirable position of the tooth zenith for later restoration. Recontouring of palatal cusp of the mesialized first premolar is performed only if the tooth prevents correct intercuspation. However, both cusps of first premolar serve usually as the basis of esthetic-functional completion of first premolar into the shape of canine.
- MeSH
- lidé středního věku MeSH
- lidé MeSH
- moláry MeSH
- ortodoncie korekční metody MeSH
- ortodontické zámky MeSH
- parodontitida chirurgie MeSH
- posun zubů * metody přístrojové vybavení MeSH
- premolár MeSH
- řezáky MeSH
- řízená tkáňová regenerace parodontu metody MeSH
- špičák MeSH
- zubní implantáty jednotlivých zubů MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- kazuistiky MeSH
- Klíčová slova
- Invisalign first aligner,
- MeSH
- dítě MeSH
- lidé MeSH
- ortodontické aktivátory snímatelné normy MeSH
- posun zubů * metody přístrojové vybavení MeSH
- řezáky MeSH
- výsledek terapie MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- kazuistiky MeSH
