Almosa Naif A, Lundgren Ted, Al-Mulla Anas, Birkhed Dowen, Kjellberg Heidrun
Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University, Saudi Arabia.
Department of Pedodontics, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Sweden.
Saudi Dent J. 2018 Apr;30(2):166-174. doi: 10.1016/j.sdentj.2018.02.001. Epub 2018 Feb 12.
To (1) analyze caries-related factors and (2) evaluate caries risk using the Cariogram model for governmental and private orthodontic patients at de-bonding and 4 years after de-bonding.
Forty orthodontic patients with mean age of 26.4 years were recruited from a governmental (G) group (n = 20) and private (P) group (n = 20) and were examined at de-bonding (T1) and 4 years after de-bonding (T2). The examination included a questionnaire, plaque scoring, caries examination, bitewing radiographs, and assessment of salivary secretion rate, buffering capacity and cariogenic microorganisms. The data were entered into the Cariogram program to illustrate the caries risk profiles.
The chance to avoid new cavities was higher in P-group compared to G-group at T1 (58% and 31%, respectively) ( < 0.01) and T2 (77% and 52%, respectively) ( < 0.001). Plaque index was significantly higher in G-group, and fluoride was used significantly more in P-group at T1 and T2 ( < 0.05). The chance to avoid new cavities was higher at T2 compared to T1 (64% and 44%, respectively) ( < 0.001). Saliva secretion rate and buffer capacity were significantly increased, and the plaque index was significantly decreased at T2 compared to T1 ( < 0.01).
According to the Cariogram, orthodontic patients were less likely to avoid new cavities at de-bonding and 4 years after de-bonding in government clinics compared to private clinics, and the caries risk significantly decreased 4 years after orthodontic treatment for all patients, regardless of the location of treatment.
（1）分析政府和私立正畸患者在拆除矫治器时及拆除矫治器4年后与龋齿相关的因素；（2）使用Cariogram模型评估龋齿风险。
从政府组（n = 20）和私立组（n = 20）招募了40名平均年龄为26.4岁的正畸患者，并在拆除矫治器时（T1）和拆除矫治器4年后（T2）进行检查。检查包括问卷调查、菌斑评分、龋齿检查、咬合翼片X线摄影，以及唾液分泌率、缓冲能力和致龋微生物的评估。将数据输入Cariogram程序以说明龋齿风险概况。
在T1时，私立组避免出现新龋洞的几率高于政府组（分别为58%和31%）（P < 0.01），在T2时也是如此（分别为77%和52%）（P < 0.001）。政府组的菌斑指数显著更高，在T1和T2时私立组使用氟化物的频率显著更高（P < 0.05）。与T1相比，T2时避免出现新龋洞的几率更高（分别为64%和44%）（P < 0.001）。与T1相比，T2时唾液分泌率和缓冲能力显著增加，菌斑指数显著降低（P < 0.01）。
根据Cariogram模型，与私立诊所相比，政府诊所的正畸患者在拆除矫治器时及拆除矫治器4年后避免出现新龋洞的可能性较小，并且所有患者在正畸治疗4年后龋齿风险均显著降低，无论治疗地点如何。
