Proposed parameters of optimal central incisor positioning in orthodontic treatment planning:A systematic review
10.4041/kjod.2022.52.1.53
- Author:
Linda SANGALLI
1
;
Domenico DALESSANDRI
;
Stefano BONETTI
;
Gualtiero MANDELLI
;
Luca VISCONTI
;
Fabio SAVOLDI
Author Information
1. Dental School, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
- Publication Type:Original Article
- From:The Korean Journal of Orthodontics
2022;52(1):53-65
- CountryRepublic of Korea
- Language:English
-
Abstract:
Objective:Planning of incisal position is crucial for optimal orthodontic treatment outcomes due to its consequences on facial esthetics and occlusion. A systematic summary of the proposed parameters is presented.
Methods:Studies on Google Scholar© , PubMed© , and Cochrane Library, providing quantitative information on optimal central incisor position were included.
Results:Upper incisors supero-inferior position (4–5 mm to upper lip, 67–73 mm to axial plane through pupils), antero-posterior position (3–4 mm to Nasion-A, 3–6 mm to A-Pogonion, 9–12 mm to true vertical line, 5 mm to A-projection, 9–10 mm to coronal plane through pupils), bucco-lingual angulation (4–7° to occlusal plane perpendicular on models, 20–22° to Nasion-A, 57–58° to upper occlusal plane, 16–20° to coronal plane through pupils, 108–110° to anterior-posterior nasal spine), mesio-distal angulation (5° to occlusal plane perpendicular on models). Lower incisors supero-inferior position (41–48 mm to soft-tissue mandibular plane), antero-posterior position (3–4 mm to Nasion-B, 1–3 mm to A-Pogonion, 12–15 mm to true vertical line, 6–8 mm to coronal plane through pupils), bucco-lingual angulation (1-4° to occlusal plane perpendicular on models, 87–94° to mandibular plane, 68° to Frankfurt plane, 22–25° to Nasion-B, 105° to occlusal plane, 64° to lower occlusal plane, 21° to A-Pogonion), mesiodistal angulation (2° to occlusal plane perpendicular on models).
Conclusions:Although these findings can provide clinical guideline, they derive from heterogeneous studies in terms of subject characteristics and reference methods.Therefore, the optimal incisal position remains debatable.
