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Dentomaxillofacial Radiology (2003) 32, 104-108
© 2003 British Institute of Radiology
doi: 10.1259/dmfr/67162332

RESEARCH

Radiographic alveolar bone loss in untreated Taiwan Chinese subjects with adult periodontitis measured by the digital scanning radiographic image analysis method

G-L Hou*,1, C-C Hung1, Y-S Yang2, T-Y Shieh2 and C-C Tsai1

1 Graduate Institute of Dental Sciences, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; 2 Graduate Institute of Oral Sciences, College of Dental Medicine, Kaohsiung Medical University, Taiwan. This work was supported by the National Science Council (grant No. NSC 89-2314-B-037-053), Taiwan, Republic of China.

*Correspondence to: Dr Guey-Lin Hou, Graduate Institute of Dental Sciences and Department of Periodontics, College of Dental Medicine, Kaohsiung Medical University, 100, Shih-Chuan 1st Road, Kaohsiung City, 80708, Taiwan; Email: houkl{at}kmu.edu.tw

Received 7 June 2002; revised 31 January 2003; accepted 6 February 2003

Objectives: To determine differences in radiographic alveolar bone loss (RABL) by age group, gender and tooth type in subjects with adult periodontitis using the digital scanning radiographic image analysis (DSRIA) method.

Methods: A total of 4262 teeth were examined for RABL in 178 individuals (96 males and 82 females). Mesial and distal sites were determined by the DSRIA method following scanning of periapical radiographs and using the Microstation 95 image software.

Results: Linear assessment of RABL using DSRIA revealed the following results. Mean bone loss of maxillary and mandibular anterior teeth was significantly higher (P<0.001 and P<0.01, respectively) in males compared with females using a two-sample t-test. The highest values of mean RABL occurred most commonly in the maxillary first molars (53.8% and 51.4% for females and males, respectively) and the mandibular central incisors (50.4% and 41.5% for males and females, respectively). Mean RABL was greater in males than in females for both the mandibular and maxillary arches, with the exception of molar sites.

Conclusions: Maxillary first molars and mandibular incisors are the highest risk sites. Moreover, greater loss occurs at the molar site in females compared with males for untreated periodontitis in Taiwan Chinese people.

Keywords: image processing, computer-assisted; radiography, dental; alveolar bone loss; periodontal diseases






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