The impact of crack–cocaine dependence on the quality and microarchitecture of the mandibular bone tissue requires further investigation. This cross-sectional study evaluated the fractal dimension and panoramic radiomorphometric indices in crack–cocaine-addicted men. Panoramic radiographs were obtained from 24 addicted and 24 nonaddicted men (control individuals) between the ages of 18 years and 60 years. The fractal dimensions of four different regions, along with the cortical mandibular, mental, and panoramic mandibular indices, were evaluated bilaterally. Significance level of 5% (p = 0.05) was adopted in the statistical analysis. Mean fractal dimension value of all the four different regions of the jaw in the addict group (1.27 ± 0.05) was lower than that of the nonaddict group (1.32 ± 0.03; p < 0.001). Furthermore, the inter-group panoramic radiomorphometric indices were not significantly different (p ≥ 0.16). Mean fractal dimension value was associated with the duration of addiction (R = 0.47; p = 0.01), contrary to the indices (p ≥ 0.10). Crack–cocaine addiction and longer duration of addiction were associated with lower fractal dimension values in the mandibular bone. Therefore, patients and dentists should be aware of this condition while planning periodontal, implant, and orthodontic therapies. Furthermore, crack–cocaine patients should be referred to a specialist for the evaluation of osteoporosis and osteopenia.

中文翻译：

---

对快克可卡因成瘾男性的分形维数和全景放射形态学指标的评估：一项横断面研究

可卡因依赖对下颌骨组织质量和微结构的影响需要进一步研究。这项横断面研究评估了可卡因成瘾男性的分形维数和全景放射形态学指标。从 18 岁至 60 岁之间的 24 名成瘾者和 24 名非成瘾者（对照个体）获得全景 X 光片。对四个不同区域的分形维数以及下颌骨皮质指数、精神指数和下颌全景指数进行了双侧评估。显着性水平 5% (p = 0.05) 在统计分析中采用。成瘾组下颌四个不同区域的平均分形维数（1.27 ± 0.05) 低于非成瘾组 (1.32 ± 0.03;p < 0.001）。此外，组间全景放射形态学指标没有显着差异（p ≥ 0.16）。平均分形维值与成瘾持续时间相关（R = 0.47;p = 0.01)，与指数相反 (p ≥ 0.10）。快克 - 可卡因成瘾和较长的成瘾持续时间与下颌骨中较低的分形维值相关。因此，患者和牙医在计划牙周、种植和正畸治疗时应该意识到这种情况。此外，可卡因患者应转诊至专家处评估骨质疏松症和骨质减少症。