Baeshen Hosam A, Rangmar Sara, Kjellberg Heidrun, Birkhed Dowen
Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia, e-mail:
Dental Care Student Clinic, Public Dental Health Service, Västra Götaland Region, Gothenburg, Sweden.
J Contemp Dent Pract. 2019 May 1;20(5):537-542.
The aim of this study is to investigate the caries situation in a group of Swedish adolescents, who were scheduled for orthodontic treatment with fixed appliances.
An age- and gender-matched control group was selected from the same city (Malmö, Sweden). Caries and fillings on smooth surfaces and fillings on occlusal surfaces were diagnosed clinically and caries and fillings on approximal surfaces by bitewings. Numbers of mutans streptococci (MS) and lactobacilli (LB) were analyzed in saliva.
There were no significant differences regarding manifest caries lesions and fillings on smooth surfaces. Numbers of occlusal-filled surfaces (FS) and approximal decayed and filled surfaces were around 10%, but did not differ between the groups. However, 53% had approximal enamel caries lesions in the test group and 46% in the control group. The prevalence of approximal decayed surfaces (DS) and FS was low in both groups, 0.57 ± 1.41 in the test group and 0.65 ± 1.38 in the control group ( > 0.05), i.e., somewhat more DS in the control group ( < 0.05). Most individuals had low/medium counts of cariogenic bacteria in their saliva and less than 10% high counts in both groups.
Most Swedish adolescents who have been scheduled for treatment with fixed appliances appear to have a low-to-medium caries risk nowadays. However, around 10% of all approximal tooth surfaces of premolars/molars had enamel caries and one-third of the individuals had medium/high counts of cariogenic bacteria in their saliva, which may be risk factors for future caries during orthodontic treatment.
Bitewing radiographs are important before starting orthodontic treatment and approximal caries and many cariogenic bacteria may be risk factors for orthodontic treatment.
本研究旨在调查一组计划接受固定矫治器正畸治疗的瑞典青少年的龋病情况。
从同一城市（瑞典马尔默）选取年龄和性别匹配的对照组。临床诊断光滑面龋和充填情况以及咬合面充填情况，通过咬翼片诊断邻面龋和充填情况。分析唾液中变形链球菌（MS）和乳酸杆菌（LB）的数量。
在明显龋损和光滑面充填方面无显著差异。咬合面充填面（FS）以及邻面龋坏和充填面的数量约为10%，但两组之间无差异。然而，试验组53%有邻面釉质龋损，对照组为46%。两组邻面龋坏面（DS）和FS的患病率均较低，试验组为0.57±1.41，对照组为0.65±1.38（>0.05），即对照组的DS略多（<0.05）。大多数个体唾液中致龋菌数量为低/中等，两组中计数高的个体均少于10%。
如今，大多数计划接受固定矫治器治疗的瑞典青少年龋病风险似乎为低到中等。然而，所有前磨牙/磨牙邻面约10%有釉质龋，三分之一的个体唾液中致龋菌数量为中等/高，这可能是正畸治疗期间未来发生龋病的危险因素。
正畸治疗开始前，咬翼片很重要，邻面龋和许多致龋菌可能是正畸治疗的危险因素。
