Oliver R G, Oliver S J, Dummer P M, Hicks R, Kingdon A, Addy M, Shaw W C
Department of Child Dental Health, Dental School, Heath Park, Cardiff, UK.
Community Dent Health. 1992 Sep;9(3):225-33.
The caries experience of the occlusal and distal surfaces of the second premolars and the occlusal and mesial surfaces of the second permanent molars was examined in four groups of subjects aged 19-20 years. Group 1 comprised subjects with first permanent molars present, Group 2 subjects with early loss of the first permanent molar (before the age of 11-12 years), Group 3 subjects with late loss of the first permanent molar (after 11-12 years but before 15-16 years) and Group 4 included a combination of Group 2 and Group 3. Loss of the first permanent molar was associated with increased caries or restorations in the occlusal surfaces of adjacent teeth, but reduced caries or restorations in the proximal surfaces of adjacent teeth. Early loss of the first molar was associated with significantly greater caries or restoration experience in proximal surfaces than late loss, but no difference was detected for occlusal surfaces.
对四组年龄在19至20岁的受试者的第二前磨牙的咬合面和远中面以及第二恒磨牙的咬合面和近中面的龋病经历进行了检查。第一组受试者有第一恒磨牙，第二组受试者第一恒磨牙早期缺失（在11至12岁之前），第三组受试者第一恒磨牙晚期缺失（在11至12岁之后但在15至16岁之前），第四组包括第二组和第三组的组合。第一恒磨牙的缺失与相邻牙齿咬合面龋齿或修复体增加有关，但与相邻牙齿邻面龋齿或修复体减少有关。第一磨牙早期缺失与邻面龋齿或修复经历显著多于晚期缺失有关，但在咬合面未检测到差异。
