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In mesialization of canines and distal segments of dentition during the treatment of missing lateral incisors, first premolar moves into the esthetically and functionally prominent place in the canine curve of the dental arch. When preparing the treatment plan, an orthodontist and a specialist in esthetic dentistry decide on whether it is appropriate to intrude first upper premolar into the place of canine in order to achieve optimum course of the gingiva line, and whether to mesiorotate in order to achieve the optimum position of the tooth long axis. Necessary adjustment of first premolars into the shape of canines is based on the extent of intrusion, shapes of palatal and vestibular cusps, and esthetics of the resulting smile. The complex interdisciplinary management must consider the limitations and cooperation of the patient.

MeSH
anodoncie terapie MeSH
lidé MeSH
ortodoncie korekční * metody MeSH
ortodontické uzavření mezery * metody MeSH
premolár MeSH
řezáky MeSH
Check Tag
lidé MeSH

Článek

Recontouring špičáků a premolárů při léčbě ageneze laterálního řezáku uzávěrem mezer. Souhrnný článek
[Recontouring of canines and premolars in the treatment of missing lateral incisor by space closure. Systematic review]

Ortodoncie. 2022 ; 31 (2) : 92-107.

ISSN 1210-4272
Medvik
Zdroj

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
anodoncie terapie MeSH
estetika stomatologická MeSH
lidé MeSH
ortodoncie korekční * metody přístrojové vybavení MeSH
posun zubů metody přístrojové vybavení MeSH
premolár MeSH
řezáky patologie MeSH
špičák MeSH
Check Tag
lidé MeSH

Článek

Digitální analýza okluzních sil u ortodonticky léčených jedinců
[Occlusal forces in patients after orthodontic therapy - digital analysis]

Ortodoncie. 2022 ; 31 (1) : 13-27.

ISSN 1210-4272
Medvik
Zdroj

Aims: The study objective was to assess occlusion in patients after orthodontic therapy with fixed appliance and in untreated individuals. Material and method: The sample included 81 students of dentistry at Masaryk University Brno aged 22-30 (mean age 24.3 ±1.67). The first group included 42 individuals without orthodontic treatment, and the second group 39 people after orthodontic therapy. Both groups filled in forms and a questionnaire on symptoms of temporomandibular dysfunction (TMD), CPI index, and digital analysis of static and dynamic occlusion performed with T-Scan. Results: No differences were found in overall condition of periodontium, mobility of mouth opening, chewing muscles pain. TMD symptoms were more frequent in the group after orthodontic therapy – clicking on the right. In case of static occlusion forces were distributed more in posterior segment of dentition in patients after orthodontic therapy. In case of dynamic occlusion there was found no difference in the guidance in lateropulsion (group, anterior or canine guidance). However, in patients after orthodontic therapy a longer time of disclusion (i.e. the interval between the beginning of lateropulsal movement and the achievement of one of the mentioned types of guidance) was observed. Conclusion: Orthodontic therapy may influence some parameters of static and dynamic occlusion. To determine the changes we can use digital occlusal analysis T-ScanTM, or apply one of techniques of articulation grinding.

Článek

Změny profilu obličeje po ortodontické a ortodontickochirurgické léčbě III. tříd
[Facial profile changes following orthodontic and orthodontic-surgical treatment of Class III]

Ortodoncie. 2022 ; 31 (1) : 45-55.

ISSN 1210-4272
Medvik
Zdroj

Aim: The aim was to measure changes in the profile of hard and soft tissues in patients with Class III anomalies treated either orthodontically or using orthodontic-surgical approach. Material and method: The retrospective study involved patients with Angle Class III and Skeletal Class III after the maximum growth spurt who had anterior crossbite all or at least three upper incisors. The sample included 57 patients (28 females, 29 males) after orthodontic or orthodontic-surgical treatment. Cephalograms taken prior to and after the therapy were analyzed; in case of the orthodontic-surgical therapy including orthodontic pretreatment and after-treatment. Results: In the surgery group (CHIR) there were found significant changes of hard tissues in all the parameters monitored. In the orthodontic group (ORTO) there were found minor changes of hard tissues in only three parameters. In the profile of soft tissues there were found more significant changes in CHIR group. The changes were small in the ORTO group (2 parameters). Conclusion: In patients with orthodontic-surgical treatment there were recorded more profound changes in both hard and soft tissues. In patients undergoing orthodontic treatment the change in the profile of soft tissues was observed only in the lips profile, the lower one in particular.