Velocity of Canine Retraction in Angle Class I Treated with First Premolar Extraction: Effect of Facial Pattern

INTRODUCTION: A female patient aged 12 years and 2 months had molars and canines in Class II relationship, severe overjet (12 mm), deep overbite (100%), excessive retroclination and extrusion of the lower incisors, upper incisor proclination, with mild midline diastema. Both dental arches appeared constricted and a lower arch discrepancy of less than -6.5 mm. Facially, she had a significant upper incisors display at rest, interposition and eversion of the lower lip, acute nasolabial angle and convex profile. OBJECTIVE: To report a clinical case consisting of Angle Class I malocclusion with deep overbite and overjet in addition to severe crowding treated with a conservative approach. METHODS: Treatment consisted of slight retraction of the upper incisors and intrusion and protrusion of the lower incisors until all crowding was eliminated. RESULTS: Adequate overbite and overjet were achieved while maintaining the Angle Class I canine and molar relationships and coincident midlines. The facial features were improved, with the emergence of a slightly convex profile and lip competence, achieved through a slight retraction of the upper lip and protrusion of the lower lip, while improving the nasolabial and mentolabial sulcus. CONCLUSIONS: This conservative approach with no extractions proved effective and resulted in a significant improvement of the occlusal relationship as well as in the patient's dental and facial aesthetics.

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Treatment of a high-angle Class I malocclusion with severe crowding and dental midline deviation: Soft tissue oriented treatment planning

Orthodontic Waves ◽

10.1016/j.odw.2006.03.001 ◽

2006 ◽

Vol 65 (2) ◽

pp. 88-93

Author(s):

Wakako Tome ◽

Seiji Haraguchi ◽

Kohtaro Yashiro ◽

Kenji Takada

Keyword(s):

Soft Tissue ◽

Treatment Planning ◽

Class I ◽

High Angle ◽

Angle Class

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Various methods of canine retraction in premolar extraction space: A case series

International Journal of Oral Health Dentistry ◽

10.18231/j.ijohd.2021.062 ◽

2021 ◽

Vol 7 (4) ◽

pp. 310-315

Author(s):

Neeteesh K Shukla ◽

Shivam Verma ◽

Parnita Dwivedi ◽

Nimmi Gupta ◽

Sneha Singh

Keyword(s):

Case Series ◽

Invasive Procedures ◽

Maxillary Canine ◽

Premolar Extraction ◽

Canine Retraction ◽

Temporary Anchorage Devices ◽

Anchorage Loss

Following article is the review and presentation of various methodologies of canine retraction [e.g.– methods under sliding and friction less mechanics, facilitation with TADs (Temporary Anchorage Devices) and MOPs (Micro-Osteo-Perforations), and invasive procedures etc.] and comparison of these methods in terms of rate of canine retraction, and molar anchorage loss. Patient’s age ranges between 15y to 19y and only right maxillary canine was taken for comparison purpose.

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Orthodontic Management of A Girl With Class Ii Div-2 Malocclusion With Deep Bite & Crowding: A Case Report

Bangladesh Journal of Orthodontics and Dentofacial Orthopedics ◽

10.3329/bjodfo.v6i1.42399 ◽

2016 ◽

pp. 29-34

Author(s):

Shamima Nargish ◽

Md Zakir Hossain

Keyword(s):

Case Report ◽

Anterior Segment ◽

Class Ii ◽

Class I ◽

Deep Bite ◽

Canine Retraction ◽

Fixed Appliances ◽

Leveling And Alignment

We describe the treatment of a girl, age 18 years with Class II div-2 malocclusion with deep bite and crowding. Treatment consisted mainly of bite opening, 1st premolars extractions, canine retraction, arch co-ordination, leveling and alignment with Edgewise fixed appliances by multiloop technique. However the treatment resulted in Class I incisor relation with proper alignment of upper and lower anterior segment, an ideal overjet, overbite and incisor angulations. Ban J Orthod & Dentofac Orthop, April 2016; Vol-6 (1-2), P.29-34

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Effect of Bi-jaw Premolar Extractions on Tooth Size Discrepancy in an Indian Population having Class I Malocclusion: An in vitro Study

Journal of Contemporary Dentistry ◽

10.5005/jp-journals-10031-1196 ◽

2017 ◽

Vol 7 (2) ◽

pp. 114-117

Author(s):

Manish Sonawane ◽

Ravindranath V Krishnan ◽

Girish R Karandikar ◽

Samay Tahilramani

Keyword(s):

Indian Population ◽

In Vitro Study ◽

Class I ◽

Tooth Size ◽

Premolar Extraction ◽

Indian Origin ◽

Size Discrepancy ◽

Tooth Size Discrepancy ◽

Overall Ratio

ABSTRACT Aim To evaluate the effect of bi-jaw premolar extractions on Bolton tooth size discrepancy in patients of Indian origin, all of which exhibited a bilateral Angle’s class I molar relationship. Materials and methods Ninety sets of pretreatment study casts, which constituted the sample for the study, were divided into three groups, namely, Bolton small (BS), Bolton normal (BN), and Bolton big (BB). Simulated bi-jaw extraction of premolars was carried out in four different combinations for each set of study cast. The four values of Bolton’s overall ratio (BOR) thus obtained were compared with the original BOR value. Results The BOR value reduced when subjected to any of the four combinations of bi-jaw premolar extractions. Conclusion Premolar extraction in any combination inevitably changes the BOR value, which potentially affects the settling of occlusion toward the finishing stages of orthodontic treatment. Clinical significance The present study provides an insight into the choice of bi-jaw premolar extraction combination for each of the three groups in patients exhibiting class I malocclusion in the Indian population. How to cite this article Tahilramani S, Karandikar GR, Krishnan RV, Sonawane M. Effect of Bi-jaw Premolar Extractions on Tooth Size Discrepancy in an Indian Population having Class I Malocclusion: An in vitro Study. J Contemp Dent 2017;7(2):114-117.

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Evaluation of condyle position in patients with Angle Class I, II, and III malocclusion using cone-beam computed tomography panoramic reconstructions

Oral Radiology ◽

10.1007/s11282-018-0326-z ◽

2018 ◽

Vol 35 (1) ◽

pp. 43-50 ◽

Cited By ~ 1

Author(s):

Aslıhan Akbulut ◽

Delal Dara Kılınç

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Class I ◽

Cone Beam ◽

Angle Class ◽

Condyle Position

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The effects of Frankel's function regulator (FR-4) therapy on the treatment of Angle Class I skeletal anterior open bite malocclusion

American Journal of Orthodontics and Dentofacial Orthopedics ◽

10.1016/s0889-5406(95)70061-7 ◽

1995 ◽

Vol 108 (1) ◽

pp. 9-21 ◽

Cited By ~ 18

Author(s):

Elif Erbay ◽

Türköz Ugur ◽

Mustafa Ülgen

Keyword(s):

Open Bite ◽

Class I ◽

Anterior Open Bite ◽

Angle Class ◽

Function Regulator

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Angle Class I malocclusion treated with lower incisor extraction

Dental Press Journal of Orthodontics ◽

10.1590/s2176-94512013000300024 ◽

2013 ◽

Vol 18 (3) ◽

pp. 150-158 ◽

Cited By ~ 4

Author(s):

Vanessa Leal Tavares Barbosa

Keyword(s):

Class I ◽

Dental Arch ◽

Periodontal Health ◽

Lower Incisor ◽

Facial Profile ◽

Anterior Crowding ◽

Angle Class ◽

Facial Esthetics ◽

Dentofacial Orthopedics ◽

Dental Crowding

In planning orthodontic cases that include extractions as an alternative to solve the problem of negative space discrepancy, the critical decision is to determine which teeth will be extracted. Several aspects must be considered, such as periodontal health, orthodontic mechanics, functional and esthetic alterations, and treatment stability. Despite controversies, extraction of teeth to solve dental crowding is a therapy that has been used for decades. Premolar extractions are the most common, but there are situations in which atypical extractions facilitate mechanics, preserve periodontal health and favor maintenance of the facial profile, which tends to unfavorably change due to facial changes with age. The extraction of a lower incisor, in selected cases, is an effective approach, and literature describes greater post-treatment stability when compared with premolar extractions. This article reports the clinical case of a patient with Angle Class I malocclusion and upper and lower anterior crowding, a balanced face and harmonious facial profile. The presence of gingival and bone recession limited large orthodontic movements. The molars and premolars were well occluded, and the discrepancy was mainly concentrated in the anterior region of the lower dental arch. The extraction of a lower incisor in the most ectopic position and with compromised periodontium, associated with interproximal stripping in the upper and lower arches, was the alternative of choice for this treatment, which restored function, providing improved periodontal health, maintained facial esthetics and allowed finishing with a stable and balanced occlusion. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO), as part of the requirements for obtaining the BBO Diplomate title.

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