1.1 ETIOLOGY: The development of maxillary permanent canines and emerging into the oral cavities is late after the neighboring teeth at ages of 10 to 12 years for girls and 11 to 13 years for boys.(1) Maxillary canines are important either for function or ethetics. canine is the second most impacted tooth, with a prevalence of 1% to 4%. and 2:1 in female : male, and bilaterally 8% to 45%. 85% of the impacted canines are palatal(2) Patients with impacted maxillary canines are difficult and take more time in treating than those with a routine malocclusion.(3) The exact etiology of palatally displaced canines is unknown, however two common theories might explain the cause: the guidance and the genetic theories. The guidance theory, in
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0.6–0.8% of children in the 10–13-year age group have permanent incisors resorbed as a result of canine impaction. By using conebeam it has been detected that root resorption of permanent lateral incisors adjacent to ectopic maxillary canines is 66.7%. It has been stated that root resorption of incisors by palatally ectopic canines rarely starts after 14 years of age and it occurs most frequently between 11 and 12 years.(8) Impaction of permanent canine can also lead to resorption of the coronal aspect of the root, and cystic changes, the frequency of which is generally thought to be low.(9) Other risks of canine impaction are pathological formation like cycts and alveolar bone resorption , shifting in the midline if the impaction is unilateral , pain in some cases and aesthetical change due to absence of canine eminance , discolouration of adjacent teeth if these teeth lost there vitality due to root resorption .
1.3 HOW TO DIAGNOSE: A permanent canine appear as a bulge in the vestibule above the deciduous canine 1.5 years before its eruption so the absence of the canine bulge after the age of 10 years indicate that the permanent canine is not in its normal position and probability of …show more content…
We can improve the eruption of the canine (up to 88%) by adding forces that prevent mesial migration of the maxillary posterior teeth after extraction of the deciduous canine, such as using cervical-pull headgear.(14) Also using rapid maxillary expansion (RME) is a valid technique in patients with impacted maxillary canine . As using RME in the early mixed dentition prevented impaction in 66% of the PDC patients when compared with an untreated control group (14%).(15) If the interceptive treatment is not benificial in such cases so surgical solution will be done by uncovering the gingiva and retracting the impacted canine . there are two techniques open exposure technique and colsed exposure technique but surgical intervention has its hazards like bleeding from the site of surgery , hepatoma , post operative pain , purulent discharge , transient parasthesia , unsatisfactory healing iatrogenic damage to adjacent soft tissue , maxillary sinus perforation sub conjunctive hemorrage , discolouration of adjacent teeth if it has been non
0.6–0.8% of children in the 10–13-year age group have permanent incisors resorbed as a result of canine impaction. By using conebeam it has been detected that root resorption of permanent lateral incisors adjacent to ectopic maxillary canines is 66.7%. It has been stated that root resorption of incisors by palatally ectopic canines rarely starts after 14 years of age and it occurs most frequently between 11 and 12 years.(8) Impaction of permanent canine can also lead to resorption of the coronal aspect of the root, and cystic changes, the frequency of which is generally thought to be low.(9) Other risks of canine impaction are pathological formation like cycts and alveolar bone resorption , shifting in the midline if the impaction is unilateral , pain in some cases and aesthetical change due to absence of canine eminance , discolouration of adjacent teeth if these teeth lost there vitality due to root resorption .
1.3 HOW TO DIAGNOSE: A permanent canine appear as a bulge in the vestibule above the deciduous canine 1.5 years before its eruption so the absence of the canine bulge after the age of 10 years indicate that the permanent canine is not in its normal position and probability of …show more content…
We can improve the eruption of the canine (up to 88%) by adding forces that prevent mesial migration of the maxillary posterior teeth after extraction of the deciduous canine, such as using cervical-pull headgear.(14) Also using rapid maxillary expansion (RME) is a valid technique in patients with impacted maxillary canine . As using RME in the early mixed dentition prevented impaction in 66% of the PDC patients when compared with an untreated control group (14%).(15) If the interceptive treatment is not benificial in such cases so surgical solution will be done by uncovering the gingiva and retracting the impacted canine . there are two techniques open exposure technique and colsed exposure technique but surgical intervention has its hazards like bleeding from the site of surgery , hepatoma , post operative pain , purulent discharge , transient parasthesia , unsatisfactory healing iatrogenic damage to adjacent soft tissue , maxillary sinus perforation sub conjunctive hemorrage , discolouration of adjacent teeth if it has been non