Table 3.

Maxillary Width and Dentofacial Characteristics of Palatal Displaced Canines

Maxillary Width and PDC	Dentofacial Characteristics and PDC
McConnell TL et al. J Dent Child 1996; 63: 190-95. PDCs associated with decreased width in the anterior maxillary area.	Stellzig A et al. Fortschr Kieferorthop 1994; 55: 97-103. 80% of patients with impacted canines have horizontal facial growth pattern.
Stellzig A et al. Fortschr Kieferorthop 1994; 55: 97-103. 82% of the PDCs have maxillary width excess.	Basdra EK et al. Eur J Orthod 2001; 23: 145-151. No statistical differences between the Class III and the Class II division 1 malocclusions and PDCs.
Langberg BJ, Peck S. Am J Orthod Dentofacial Orthop 2000; 118: 220-23. No statistical differences between two groups both in the anterior and the posterior maxillary width.	Sacerdoti R and Baccetti T. Angle Orthod 2004; 74: 725-32 60% of the patients with PDCs have a low angle vertical growth pattern
Al Nimri K and Gharaibeh T. Eur J Orthod 2005; 27: 461-5. The transverse arch dimension was significantly wider in the PDCs patients. Sambataro S et al. Angle Orthod 2005; 75: 28-34. The closer the canine crown is to the mid-sagittal line and the larger the posterior part of hemimaxilla in the PA analysis the higher the probability of eruption disturbance. Schindel RH and Duffy SL. Angle Orthod 2007; 77: 430-35. Higher prevalence of unilateral canine impaction in the maxillary deficiency group compared to the control group.	Al Nimri K and Gharaibeh T. Eur J Orthod 2005; 27: 461-5. PDC occurred most frequently in subjects with a Class II Division II malocclusion (44%). Lüdicke G et al. Incisor inclination—risk factor for palatally-impacted canines. J Orofac Orthop 2008; 69 357-64. 45% of patients with PDCs had Class II, Division II malocclusion