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MIXED DENTITION SPACE ANALYSIS OF A SOUTHERN ITALIAN POPULATION: NEW REGRESSION EQUATIONS FOR UNERUPTED TEETH.

Abstract

Mixed dentition analysis forms a critical aspect of early orthodontic treatment. In fact an accurate space analysis is one of the important criteria in determining whether the treatment plan may involve serial extraction, guidance of eruption, space maintenance, space regaining or just periodic observation of the patients. The aim of the present study was to calculate linear regression equations in mixed dentition space analysis, measuring 230 dental casts mesiodistal tooth widths, obtained from southern Italian patients (118 females, 112 males, mean age 15±3 years). Student’s t-test or Wilcoxon test for independent and paired samples were used to determine right/left side and male/female differences. On the basis of the sum of the mesiodistal diameters of the 4 mandibular incisors as predictors for the sum of the widths of the canines and premolars in the mandibular mixed dentition, a new linear regression equation was found: y = 0.613x+7.294 (r= 0.701) for both genders in a southern Italian population. To better estimate the size of leeway space, a new regression equation was found to calculate the mesiodistal size of the second premolar using the sum of the four mandibular incisors, canine and first premolar as a predictor. The equation is y = 0.241x+1.224 (r= 0.732). In conclusion, new regression equations were derived for a southern Italian population.

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  • Authors+Show Affiliations

    ,

    School of Medicine, University of Bari Aldo Moro, Bari, Italy.

    ,

    Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy.

    ,

    School of Medicine, University of Bari Aldo Moro, Bari, Italy.

    ,

    Department of Surgical and Morphological Science, Dental School, University of Varese, Varese Italy.

    ,

    Department of Interdisciplinary Medicine, University of Bari Aldo Moro, Bari, Italy; 5School of Medicine, University of Bologna, Bologna, Italy.

    ,

    School of Medicine, University of Bari Aldo Moro, Bari, Italy.

    ,

    School of Medicine, University of Bologna, Bologna, Italy.

    School of Medicine, University of Bologna, Bologna, Italy.

    Source

    MeSH

    Adolescent
    Bicuspid
    Child
    Cuspid
    Dental Models
    Dentition, Mixed
    Female
    Humans
    Incisor
    Italy
    Linear Models
    Male
    Mandible
    Odontometry
    Reproducibility of Results
    Sex Characteristics
    Tooth Diseases
    Tooth, Unerupted

    Pub Type(s)

    Letter

    Language

    eng

    PubMed ID

    26122245

    Citation

    TY - JOUR T1 - MIXED DENTITION SPACE ANALYSIS OF A SOUTHERN ITALIAN POPULATION: NEW REGRESSION EQUATIONS FOR UNERUPTED TEETH. AU - Cirulli,N, AU - Ballini,A, AU - Cantore,S, AU - Farronato,D, AU - Inchingolo,F, AU - Dipalma,G, AU - Gatto,M R, AU - Alessandri Bonetti,G, PY - 2015/7/1/entrez PY - 2015/7/1/pubmed PY - 2015/8/22/medline SP - 515 EP - 20 JF - Journal of biological regulators and homeostatic agents JO - J. Biol. Regul. Homeost. Agents VL - 29 IS - 2 N2 - Mixed dentition analysis forms a critical aspect of early orthodontic treatment. In fact an accurate space analysis is one of the important criteria in determining whether the treatment plan may involve serial extraction, guidance of eruption, space maintenance, space regaining or just periodic observation of the patients. The aim of the present study was to calculate linear regression equations in mixed dentition space analysis, measuring 230 dental casts mesiodistal tooth widths, obtained from southern Italian patients (118 females, 112 males, mean age 15±3 years). Student’s t-test or Wilcoxon test for independent and paired samples were used to determine right/left side and male/female differences. On the basis of the sum of the mesiodistal diameters of the 4 mandibular incisors as predictors for the sum of the widths of the canines and premolars in the mandibular mixed dentition, a new linear regression equation was found: y = 0.613x+7.294 (r= 0.701) for both genders in a southern Italian population. To better estimate the size of leeway space, a new regression equation was found to calculate the mesiodistal size of the second premolar using the sum of the four mandibular incisors, canine and first premolar as a predictor. The equation is y = 0.241x+1.224 (r= 0.732). In conclusion, new regression equations were derived for a southern Italian population. SN - 0393-974X UR - https://www.unboundmedicine.com/medline/citation/26122245/MIXED_DENTITION_SPACE_ANALYSIS_OF_A_SOUTHERN_ITALIAN_POPULATION:_NEW_REGRESSION_EQUATIONS_FOR_UNERUPTED_TEETHhttp:/www.unboundmedicine.com/medline/citation/26122245/MIXED_DENTITION_SPACE_ANALY L2 - http://openurl.ebscohost.com/linksvc/linking.aspx?genre=article&sid=PubMed&issn=0393-974X&title=J Biol Regul Homeost Agents&volume=29&issue=2&spage=515&atitle=MIXED DENTITION SPACE ANALYSIS OF A SOUTHERN ITALIAN POPULATION: NEW REGRESSION EQUATIONS FOR UNERUPTED TEETH.&aulast=Cirulli&date=2015 ER -