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Stomatologija 2012; 14 (3): 89-92 182 KB

Immediate post-treatment crowned Herbst effects in growing patients

Dalia Latkauskienė, Gundega Jakobsone

Summary

Objective. The aim of this prospective study was to describe the mechanism of Class II correction in growing patients induced by crown Herbst (cHerbst) appliance as an immediate result of therapy.
Materials and methods. Forty patients (mean age 13.6±1.3 years) with stable Class I occlusion 1 year following treatment with the cHerbst appliance were selected from a prospective sample of 180 consecutively treated Class II patients. No other appliances were used during treatment. The immediate dentoskeletal changes after discontinuing cHerbst therapy were compared with a matched sample of untreated Class II subjects (mean age 13.9±1.6 years). Lateral cephalograms were taken before treatment and immediately after one year therapy.
Results. Treatment produced significant skeletal changes: increase in mandibular length and SNB angle, decrease of ANB angle, restricted growth of posterior maxilla. Significant dentoalveolar changes: maxillary molars moved backwards and tipped distally, lower first molars moved forward and extruded, lower incisors proclined, upper incisors retroclined, overjet and overbite decreased.
Conclusions. Immediate postreatment results revealed that Class II was mainly corrected due to dentoalveolar changes and only limited skeletal change.

Key words: Class II malocclusion, crown Herbst appliance.

Received: 09 03 2011

Accepted for publishing: 21 09 2012

¹Clinic of Orthodontics, Faculty of Odontology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
²Department of orthodontics, Institute of Stomatology, Riga Stradins University, Riga, Latvia

Dalia Latkauskienė¹ – PhD student
Gundega Jakobsone² – D.D.S., Dr. med. sc.

Address correspondence to: Dalia Latkauskienė, J.Lukšos-Daumanto g. 6, LT 50106 Kaunas.
E-mail address: dalia.lat@gmail.com



	Baltic Dental and Maxillofacial Journal

September, 2012, Vol. 14, No. 3 CONTENTS REVIEWS Review of the success of pulp exposure treatment of cariously and traumatically exposed pulps in immature permanent incisors and molars Jekaterina Gudkina, Anda Mindere, Gundega Locane, Anda Brinkmane 71-80 SCIENTIFIC ARTICLES Needs for prosthetic treatment in Vilnius population at the age over 45 years old Kestutis Sveikata, Irena Balciuniene, Janina Tutkuviene 81-84 Augmentation of atrophic posterior maxilla by short implants and osteotome technique Mario Santagata, Salvatore D’Amato, Luigi Itro, Raffaele Rauso, Gianpaolo Tartaro 85-88 Immediate post-treatment crowned Herbst effects in growing patients Dalia Latkauskienė, Gundega Jakobsone 89-92 Standarts for permanent teeth emergence time and sequence in Lithuanian children, residents of Vilnius city Ruta Almonaitiene, Irena Balciuniene, Janina Tutkuviene 93-100 © 2012 Stomatologija		Stomatologija 2012; 14 (3): 89-92 182 KB Immediate post-treatment crowned Herbst effects in growing patients Dalia Latkauskienė, Gundega Jakobsone Summary Objective. The aim of this prospective study was to describe the mechanism of Class II correction in growing patients induced by crown Herbst (cHerbst) appliance as an immediate result of therapy. Materials and methods. Forty patients (mean age 13.6±1.3 years) with stable Class I occlusion 1 year following treatment with the cHerbst appliance were selected from a prospective sample of 180 consecutively treated Class II patients. No other appliances were used during treatment. The immediate dentoskeletal changes after discontinuing cHerbst therapy were compared with a matched sample of untreated Class II subjects (mean age 13.9±1.6 years). Lateral cephalograms were taken before treatment and immediately after one year therapy. Results. Treatment produced significant skeletal changes: increase in mandibular length and SNB angle, decrease of ANB angle, restricted growth of posterior maxilla. Significant dentoalveolar changes: maxillary molars moved backwards and tipped distally, lower first molars moved forward and extruded, lower incisors proclined, upper incisors retroclined, overjet and overbite decreased. Conclusions. Immediate postreatment results revealed that Class II was mainly corrected due to dentoalveolar changes and only limited skeletal change. Key words: Class II malocclusion, crown Herbst appliance. Received: 09 03 2011 Accepted for publishing: 21 09 2012 ¹Clinic of Orthodontics, Faculty of Odontology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania ²Department of orthodontics, Institute of Stomatology, Riga Stradins University, Riga, Latvia Dalia Latkauskienė¹ – PhD student Gundega Jakobsone² – D.D.S., Dr. med. sc. Address correspondence to: Dalia Latkauskienė, J.Lukšos-Daumanto g. 6, LT 50106 Kaunas. E-mail address: dalia.lat@gmail.com