Factors affecting treatment decisions for Class I malocclusions

Batool Ali, Attiya Shaikh, Mubassar Fida

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Introduction: Orthodontic treatment planning requires skill and expertise with considerable practice variations. The aims of this study were to review retrospectively the pretreatment records of patients with Class I malocclusion and to identify variables that could play a role in the treatment decision. Methods: From the available records of 1500 orthdontic patients, the pretreatment records of 202 patients were selected at random. Inclusion and exclusion criteria were applied, and the surviving records were divided into extraction (n = 92) and nonextraction (n = 92) treatment groups. Skeletal, dental, and soft tissue measurements were obtained from pretreatment lateral cephalograms and dental casts of subjects with bilateral Class I molar relationships. Data were statistically analyzed by binary logistic regression tests. Results: The results showed that the variables of lower anterior facial height, E-plane to upper lip, and maxillary and mandibular incisor inclinations were significantly increased in the extraction group (P <0.05), whereas spacing in the mandibular arch and increased overbite were statistically significant in the nonextraction treatment group (P <0.05). According to the model, the odds of nonextraction treatment are 1.29 and 1.24 times that of extraction treatment for every 1-mm increase in overbite and spacing in the mandibular arch, respectively. Conclusions: Vertical facial pattern, overbite, mandibular tooth size-arch length discrepancy, lip position, and maxillary and mandibular incisor inclinations are a few of the important variables that should not be overlooked when planning orthodontic treatment. The findings of this study could facilitate the treatment planning process for patients with Class I malocclusion.

Original languageEnglish
Pages (from-to)234-237
Number of pages4
JournalAmerican Journal of Orthodontics and Dentofacial Orthopedics
Issue number2
Publication statusPublished - Aug 2018


Dive into the research topics of 'Factors affecting treatment decisions for Class I malocclusions'. Together they form a unique fingerprint.

Cite this