CNRS, EFS, ADES, Aix-Marseille Université, Marseille, France; Faculté des Sciences Médicales et Paramédicales, Ecole de Médecine Dentaire, Aix-Marseille Université, Marseille, France; Assistance Publique des Hôpitaux de Marseille, Pôle PROMOD Odontologie, Service de Réhabilitations Orales, Marseille, France.
CNRS, EFS, ADES, Aix-Marseille Université, Marseille, France.
J Stomatol Oral Maxillofac Surg. 2024 Oct;125(5S2):101825. doi: 10.1016/j.jormas.2024.101825. Epub 2024 Mar 16.
In edentulous maxillae, the anterior maxilla is the region of interest for implant placement due to posterior bone resorption and sinus pneumatization. This study aimed to assess variations in bone density in different regions of the edentulous maxilla according to sex and age, using cone beam computed tomography (CBCT).
69 CBCT from edentulous maxilla were analyzed. Six virtual implants were planned between the maxillary sinuses at incisor, canine, and premolar sites. Bone densities (in Hounsfield units HU) were recorded at six points on the neck, body, and apex of the buccal and lingual areas of each virtual implant. We used the two-sample t-test to compare male and female bone densities, and the Spearman correlation coefficient to analyze the correlation between mean bone density and age. One-way analysis of variance with post hoc pairwise t-tests was used to analyze the differences in density between three sites of the edentulous maxilla and the differences in density between three parts of the implant. The significance level was set at 5%.
Mean bone density in males was significantly higher than in females. There was a significant correlation between mean bone density and age in females. Incisor sites showed the highest mean bone density, followed by canine and premolar sites. There was a significant decline in bone density from the neck to the apex.
Bone density varied within and among edentulous maxillae. Bone density of the edentulous maxilla seemed to be influenced by age in women and by sex.
在无牙上颌中，由于后骨吸收和窦气腔化，前上颌是种植体放置的感兴趣区域。本研究旨在使用锥形束 CT（CBCT）评估不同性别和年龄的无牙上颌不同区域的骨密度变化。
分析了 69 例无牙上颌 CBCT。在切牙、犬牙和前磨牙部位的上颌窦之间计划了六个虚拟植入物。记录了每个虚拟植入物颊侧和舌侧颈部、体部和根尖处的六个点的骨密度（以 Hounsfield 单位 HU 表示）。我们使用两样本 t 检验比较男性和女性的骨密度，使用 Spearman 相关系数分析平均骨密度与年龄之间的相关性。使用单因素方差分析和事后两两 t 检验分析无牙上颌三个部位之间的密度差异以及种植体三个部位之间的密度差异。显著性水平设为 5%。
男性的平均骨密度显著高于女性。女性的平均骨密度与年龄呈显著相关。切牙部位的平均骨密度最高，其次是犬牙和前磨牙部位。从颈部到根尖，骨密度呈显著下降趋势。
无牙上颌内和之间的骨密度存在差异。无牙上颌的骨密度似乎受女性年龄和男性性别影响。
