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Site-specificity of tooth agenesis in subjects with maxillary canine malpositions.
Angle Orthod. 1996; 66(6):473-6.AO

Abstract

Tooth agenesis (hypodontia) was studied in two samples of nonsyndromic subjects possessing either maxillary canine-first premolar transposition (Mx.C.P1; N=43, M9:F34) or palatal displacement of the maxillary canine (PDC; N=58, M21:F37). Agenesis of permanent teeth was identified by x-ray film analysis. Significantly elevated tooth-agenesis frequencies were noted in both samples. Statistically significant differences between the Mx.C.P1 and PDC samples were found in locations of absent teeth, indicating site-specificity of tooth agenesis associated with these canine malpositions. In Mx.C.P1, agenesis of third molars (M3) occurred at a near-normal rate (19%) while maxillary lateral incisor (I2) agenesis showed a thirteen-fold increase (26%). In PDC, the prevalence rate for associated M3 agenesis was 40%, twice the normal rate, while I2 agenesis was 3%, a slight elevation of no statistical significance. These new findings may warrant a hypothesis of anteroposterior site-specific shift in the occurrence of tooth agenesis, associated genetically or epigenetically with distinct anomalies of maxillary canine position and possibly other abnormalities.

Authors+Show Affiliations

Department of Orthodontics, Harvard School of Dental Medicine, Boston, Mass., USA.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

8974184

Citation

Peck, S, et al. "Site-specificity of Tooth Agenesis in Subjects With Maxillary Canine Malpositions." The Angle Orthodontist, vol. 66, no. 6, 1996, pp. 473-6.
Peck S, Peck L, Kataja M. Site-specificity of tooth agenesis in subjects with maxillary canine malpositions. Angle Orthod. 1996;66(6):473-6.
Peck, S., Peck, L., & Kataja, M. (1996). Site-specificity of tooth agenesis in subjects with maxillary canine malpositions. The Angle Orthodontist, 66(6), 473-6.
Peck S, Peck L, Kataja M. Site-specificity of Tooth Agenesis in Subjects With Maxillary Canine Malpositions. Angle Orthod. 1996;66(6):473-6. PubMed PMID: 8974184.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Site-specificity of tooth agenesis in subjects with maxillary canine malpositions. AU - Peck,S, AU - Peck,L, AU - Kataja,M, PY - 1996/1/1/pubmed PY - 1996/1/1/medline PY - 1996/1/1/entrez SP - 473 EP - 6 JF - The Angle orthodontist JO - Angle Orthod VL - 66 IS - 6 N2 - Tooth agenesis (hypodontia) was studied in two samples of nonsyndromic subjects possessing either maxillary canine-first premolar transposition (Mx.C.P1; N=43, M9:F34) or palatal displacement of the maxillary canine (PDC; N=58, M21:F37). Agenesis of permanent teeth was identified by x-ray film analysis. Significantly elevated tooth-agenesis frequencies were noted in both samples. Statistically significant differences between the Mx.C.P1 and PDC samples were found in locations of absent teeth, indicating site-specificity of tooth agenesis associated with these canine malpositions. In Mx.C.P1, agenesis of third molars (M3) occurred at a near-normal rate (19%) while maxillary lateral incisor (I2) agenesis showed a thirteen-fold increase (26%). In PDC, the prevalence rate for associated M3 agenesis was 40%, twice the normal rate, while I2 agenesis was 3%, a slight elevation of no statistical significance. These new findings may warrant a hypothesis of anteroposterior site-specific shift in the occurrence of tooth agenesis, associated genetically or epigenetically with distinct anomalies of maxillary canine position and possibly other abnormalities. SN - 0003-3219 UR - https://www.unboundmedicine.com/medline/citation/8974184/Site_specificity_of_tooth_agenesis_in_subjects_with_maxillary_canine_malpositions_ L2 - http://www.angle.org/doi/10.1043/0003-3219(1996)066<0473:SSOTAI>2.3.CO;2?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -