Opinions of American and Swedish Orthodontists about the Role of Erupting Third Molars as a Cause of Dental Crowding.
Angle Orthod. 2009 Nov;79(6):1139-42.
Opinions of American and Swedish Orthodontists about the Role of Erupting Third Molars as a Cause of Dental Crowding.
Tüfekçi E, Svensk D, Kallunki J, Huggare J, Lindauer SJ, Laskin DM.
Abstract Objective: To compare the opinions of Swedish orthodontists and American orthodontists regarding the association between third molar eruption and dental crowding. Materials and Methods: A survey was distributed to Swedish orthodontists (n = 230) asking their views on the force exerted by erupting third molars, its relationship to crowding, and their recommendations for prophylactic removal. Results were compared with those from a similar study conducted in the United States. Chi square analysis was used to determine differences in responses to questions between Swedish and American orthodontists. P = .05 was considered significant. Results: Both Swedish and American orthodontists believed that lower third molars were more likely than upper third molars to cause force (65% and 58% for Swedish and American orthodontists, respectively) and crowding (42% and 40%, respectively). No statistically significant differences were seen between the answers of American and Swedish orthodontists regarding the role of upper and lower third molars in causing crowding. Although only 18% of Swedish orthodontists "generally" or "sometimes" recommended prophylactic removal of mandibular third molars, 36% of American orthodontists "generally" or "sometimes" recommended removal (P < .0001). Conclusions: Most orthodontists in the United States and Sweden do believe that erupting lower third molars exert an anterior force; however, they also believe that these teeth "rarely" or "never" cause crowding of the dentition. The reason that more American orthodontists recommend prophylactic removal of mandibular third molars remains unexplained.
Opinions of American and Swedish Orthodontists about the Role of Erupting Third Molars as a Cause of Dental Crowding.
Tüfekçi E, Svensk D, Kallunki J, Huggare J, Lindauer SJ, Laskin DM.
Abstract Objective: To compare the opinions of Swedish orthodontists and American orthodontists regarding the association between third molar eruption and dental crowding. Materials and Methods: A survey was distributed to Swedish orthodontists (n = 230) asking their views on the force exerted by erupting third molars, its relationship to crowding, and their recommendations for prophylactic removal. Results were compared with those from a similar study conducted in the United States. Chi square analysis was used to determine differences in responses to questions between Swedish and American orthodontists. P = .05 was considered significant. Results: Both Swedish and American orthodontists believed that lower third molars were more likely than upper third molars to cause force (65% and 58% for Swedish and American orthodontists, respectively) and crowding (42% and 40%, respectively). No statistically significant differences were seen between the answers of American and Swedish orthodontists regarding the role of upper and lower third molars in causing crowding. Although only 18% of Swedish orthodontists "generally" or "sometimes" recommended prophylactic removal of mandibular third molars, 36% of American orthodontists "generally" or "sometimes" recommended removal (P < .0001). Conclusions: Most orthodontists in the United States and Sweden do believe that erupting lower third molars exert an anterior force; however, they also believe that these teeth "rarely" or "never" cause crowding of the dentition. The reason that more American orthodontists recommend prophylactic removal of mandibular third molars remains unexplained.
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