Baltic Dental and Maxillofacial Journal
Main page Editorial board Information

2003, Vol. 5, No. 1


Analysis of Experimental and Clinical Research of Destruction of Peripheral Branches of the Trigeminal Nerve

Electrophoresis of Whole-cell Soluble Proteins of Enterococcus faecalis and Yeast Isolated in the Root Canals of Previously Root-filled Teeth

Pharyngeal Airway Sagittal Dimension in Patients with Class III Skeletal Dentofacial Deformity Before and After Bimaxillary Surgery

Late Results of the Secondary Alveolar Bone Grafting in Complete Unilateral Cleft Lip and Palate Patients

Prediction of Malocclusion Development Based on the Evaluation of the Ethiologic Factors

Analysis of Tooth Size Discrepancy (Bolton Index) among Patients of Orthodontic Clinic at Kaunas Medical University

Oral Hygiene Habits and Complaints of Gum Bleeding Among Schoolchildren in Lithuania

© 2003, Stomatologija

Stomatologija 2003; 5 (1): 27-30 183 KB

Analysis of Tooth Size Discrepancy (Bolton Index) among Patients of Orthodontic Clinic at Kaunas Medical University

Ale Gaidyte, Dalia Latkauskiene, Diana Baubiniene, Vaidotas Leskauskas


The purpose of the study was to determine the total (TBI) and anterior (ABI) Bolton indexes among patients treated in the Clinic of Orthodontics at Kaunas University of Medicine, and to evaluate the clinical significance of the estimated tooth size discrepancies, the dependence of Bolton index on gender, teeth width variability, and to estimate the Bolton index changes that mostly have influence on teeth.

108 diagnostic models (37 boys and 71 girls) were examined. It was determined that in 62.3% of the cases (68 patients) normal total Bolton ratio was found (no tooth size discrepancies), 21.3% of patients (23 patients) - had wider upper than lower teeth, 15.7% (17 patients) – the opposite. Estimated ABI was normal in 48.1% (52 patients) of the cases, in 20.4% (22 patients) - upper front teeth appeared to be wider than lower front teeth, in 31.5% (34 patients) – the opposite. Significant tooth size discrepancies in both posterior and anterior segments were detected in 5.5% of examined patients (91.3-3.86(2S)<=TBI<=91.3+3.86(2S)), in 18.5% - only in the anterior part of the dentition (77.2-3.30(2S)<=ABI<=77.2+3.30(2S)). Both TBI and ABI values showed no dependence on patients’ gender and occlusion. BI was mostly influenced by the width differences of the first permanent molars, upper central and lateral incisors.

Key words: Bolton index, tooth size discrepancy.

Address correspondence to dr. Ale Gaidyte: 6 Lukšos-Daumanto str, LT-3009, Kaunas, Lithuania. E-mail address:

Received: 15 02 2003

Accepted for publishing: 25 03 2003