Association between maxillary and mandibular apical base lengths and severity of dental crowding or spacing in Class II malocclusion subjects: an in-vitro study

Rishi-Raj Singh; Pratik Verma; Devina Pradhan; Rishibha Bhardwaj; Simran Kour

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Association between maxillary and mandibular apical base lengths and severity of dental crowding or spacing in Class II malocclusion subjects: an in-vitro study

Rishi-Raj Singh ; Pratik Verma ^[2] ; Devina Pradhan ^[1] ; Rishibha Bhardwaj ^[3] ; Simran Kour
1. [1] Rama Dental College Hospital & Research Centre
  
  Rama Dental College Hospital & Research Centre
  
  India
2. [2] MDS. Tutor, Department of Orthodontics & Dentofacial Orthopaedics, Dental Institute, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India
3. [3] MDS. Senior Lecturer, Department of Orthodontics & Dentofacial Orthopaedics ITS Dental College, Ghaziabad, Uttar Pradesh, India
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Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 11, Nº. 1 (January ), 2019, págs. 49-54
Idioma: inglés
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Resumen
- Anterior crowding/ spacing are one of the major problems that inspire patients to undergo orthodontic treatment. Several factors associated with anterior crowding/ spacing includes arch width and length, mesio-distal tooth diameter and proportions. The aim of the present study was to evaluate the relationship of maxillary and mandibular base lengths to the amount of anterior dental crowding/ spacing in patients with complete class II malocclusions.
  
  A retrospective study was done with 152 patients who were divided into four groups according to the severity of pre-treatment dental crowding/spacing present in the mandibular arch. Measurements were performed on the pre-treatment dental casts and lateral cephalograms. Statistical analysis was done using t-test and chi-square test.
  
  Subjects with complete class II malocclusion and moderate to severe mandibular crowding [≥3mm] have significantly smaller base lengths as compared to the subjects with slight crowding or spacing [<3mm].
  
  There exists an inverse correlation between maxillary and mandibular base lengths and the severity of dental crowding and direct correlation with spacing.