Naslov
Changes in dentition and oral hygiene in the retention phase of orthodontic treatment

Autori
Kanižaj Ugrin, Silvija ; Špalj, Stjepan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts 2nd Congress of the Faculty of Dental Medicine University of Rijeka / - , 2021, 59-55

Skup
2. Kongres Fakulteta dentalne medicine Sveučilišta u Rijeci „Orofacijalna bol i disfunkcije”

Mjesto i datum
Rijeka, Hrvatska, 02.09.2022. - 03.09.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
orthodontic therapy ; retention ; dentition ; hygiene

Sažetak
Objective: To assess changes of dentition and periodontium, and hygiene in retention after the end of the active phase of orthodontic treatment, and relationship with gender and pretherapeutic condition.Material and methods: A total of 51 subjects were recruited. A square retainer (0.673x0.268mm) was bonded in the mandible after completing the active phase of comprehensive orthodontic treatment with fixed appliances. After two years of retention, the sample for analysis consisted of 42 subjects of pretherapeutic age 11- 18 years (66% women). The Little's index of irregularity of the incisors, intercanine width, accumulation of biofilm, calculus and gingivitis, and the incidence of retainer detachment were recorded in the mandible. Subjects were examined before orthodontic therapy, upon completion, and after two years of retention. Results: Orthodontic treatment significantly corrected incisor irregularity (mean 4.6±2.7mm) and increased intercanine width (mean 0.9±1.9mm ; p<0.05). The treatment change in intercanine width linearly inversely correlated with the therapeutic change in the Little index (r=-0.472 ; p=0.002). As the intercanine width increased, the irregularity of the incisor decreased. The incidence of retainer detachment over two years was 38% of cases. There was a small but statistically significant increase in incisor irregularity in retention, while a decrease in intercanine width was not significant. The posttreatment incidence of irregularity was 17% (mean 0.1±0.2) and the incidence of mandibular intercanine width reduction 24% (mean 0.1±0.4mm). There were no difference between sexes. The post- treatment change in incisor irregularity correlated linearly inversely with the post- therapeutic change in intercanine width (r=-0.668 ; p<0.001). Calculus accumulation increased significantly during retention (p<0.001), but not biofilm accumulation and gingivitis extent. Conclusion: Post-treatment changes of dental arches with bonded retainer are not big, but also not uncommon. Bonded retainer quite often detached and increases the accumulation of tartar. Similar in both sexes.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

POVEZANOST RADA