Baljoon Mostafa, Natto Suzan, Bergstrom Jan
Department of Periodontology, Karolinska Institutet, School of Dentistry, Stockholm, Sweden.
Acta Odontol Scand. 2003 Feb;61(1):47-51. doi: 10.1080/ode.61.1.47.51.
A vertical (angular) defect is a radiographic diagnostic phenomenon of severe periodontal destruction. The objective of the present study was to investigate the prevalence and severity of vertical defects in a population of dentally aware individuals at 2 different points in time, 1982 and 1992. Intra-oral radiographs of 251 individuals in 1982 and 247 individuals in 1992 in the age range 21-70 years were assessed with regard to presence or absence of vertical defects adjacent to a maximum of 28 teeth per person. A vertical bone defect was defined as a one-sided bone resorption of the interdental marginal bone > or = 2 mm that had a typical angulation towards either the mesial or distal aspect of the root. 'The prevalence of vertical defects in 1982 was 38% increasing from 11% in age 21-30 years to 64% in age 51-70 years, and 27% in 1992 increasing from 7% to 47% in the same age groups, respectively. The number of defects per person increased with age. The majority of affected individuals had 1-2 defects and only about 5% were severely affected. Vertical defects were more common in the posterior as compared to the anterior region of the dentition and the distribution of defects within the maxilla as well as the mandible typically revealed a right-hand to left-hand side symmetry. Vertical defects seem to be a rare phenomenon in dentally aware individuals. In particular, multiple defects were observed only in a minor proportion. Both prevalence and severity increased with age.
垂直（角形）缺损是严重牙周破坏的一种影像学诊断现象。本研究的目的是调查在1982年和1992年这两个不同时间点，有牙齿保健意识人群中垂直缺损的患病率和严重程度。对1982年的251名年龄在21 - 70岁的个体和1992年的247名年龄在21 - 70岁的个体的口腔内X光片进行了评估，观察每人最多28颗牙齿相邻部位是否存在垂直缺损。垂直骨缺损定义为牙间边缘骨的单侧骨吸收≥2毫米，且向牙根的近中或远中方向有典型的角度。1982年垂直缺损的患病率为38%，从21 - 30岁年龄段的11%增加到51 - 70岁年龄段的64%；1992年为27%，在相同年龄组中分别从7%增加到47%。每人的缺损数量随年龄增加。大多数受影响个体有1 - 2个缺损，只有约5%受到严重影响。与牙列前部相比，垂直缺损在后部更常见，上颌骨和下颌骨内缺损的分布通常呈现右手侧到左手侧的对称性。在有牙齿保健意识的个体中，垂直缺损似乎是一种罕见现象。特别是，仅在一小部分个体中观察到多个缺损。患病率和严重程度均随年龄增加。
