Delayed Exfoliation of Primary Teeth Due to Second Pathoses: Case Series Study

The delayed exfoliation of primary teeth among children is a common and frequent dental problem whose most sited cause is misalignment of the crown of the successional permanent tooth with the root apex of the primary tooth. Treatment is often extraction of the over retained primary teeth and reassurance of the guardian that the normal tongue movements will push the misaligned permanent successional teeth into line in cases of mild misalignment or orthodontic treatment in severe cases of misalignment. However; meticulous history taking and careful clinical oral examination may yield an underlying pathosis as the three cases in this study illustrate. Underlying second pathoses may exert local and systemic effects on the normal exfoliative mechanism resulting in over retention of primary teeth despite proper alignment of the crown of the permanent successional tooth with the root apex of the primary tooth

Les dystopies dentaires du secteur antero-lateral et la mesio-version de la premiere definitive

Une evaluation de la prevalence de perte precoce de la deuxieme molaire de lait en tant facteur etiologique des dystopies et encombrements dentaires dans le secteur antero-lateral a ete faite par l'auteur. Le resultat n'a pas ete trouve significatif; hormis la tendance a l'inclusion de la deuxieme premolaire plus elevee dans le cas d'extraction que dans le cas de non extraction de cette derniere. Le facteur etiopathologique est le plus determinant dans l'installation des dysharmonies alveolaires et contenu dentaire