Lakha Tabrez, Kheur Mohit, Mühlemann Sven, Kheur Supriya, Le Bach
Department of Prosthodontics and Implantology, M.A.Rangoonwala College of Dental Sciences and Research Center, Pune, India.
Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
J Oral Biol Craniofac Res. 2021 Jan-Mar;11(1):40-46. doi: 10.1016/j.jobcr.2020.11.007. Epub 2020 Nov 17.
To assess the correlation between the diameter of the mandibular lingual vascular canal (MLVC) as determined on CBCT examination to blood flow and arterial diameter as determined by ultrasound Doppler analysis (USG) in dentate and edentulous patients.
20 subjects were equally distributed into two groups based on the status of their dentition. Group 1 included dentate subjects (DE) and Group 2 included edentulous subjects (ED).The subjects from both the groups underwent CBCT scan for the assesement of the diameter of the MLVC.Similarly, USG was done to assess the diameter of the sublingual artery anastomosis and blood flow in the anterior mandible. Data was analysed using Karl Pearson's Correlation coefficient test and Student's unpaired 't' test.
Irrespective of the status of the dentition and age, a positive correlation was noted between the diameter of foramen on CBCT examination and the diameter of anastomosing artery as studied by the USG (r = 0.290).Similarly, a positive correlation was observed between the diameter of foramen on CBCT and the volume of blood entering the mandible (r = 0.447).A positive correlation (r = 0.138) was observed between the diameter of the anastomosing artery and the volume of blood entering the mandible.
The anterior mandible has a rich vascular supply independent of age and status of the dentition.The dimensions and location of MVLC could be assessed on a CBCT prior to implant placement so that the operating surgeon has an idea about the vascularity of the region. Further studies with higher sample size should be undertaken to confirm these findings.
评估在有牙和无牙患者中，锥形束计算机断层扫描（CBCT）检查所测定的下颌舌侧血管管（MLVC）直径与超声多普勒分析（USG）所测定的血流及动脉直径之间的相关性。
根据牙列状况将20名受试者平均分为两组。第1组包括有牙受试者（DE），第2组包括无牙受试者（ED）。两组受试者均接受CBCT扫描以评估MLVC的直径。同样，进行USG以评估舌下动脉吻合处的直径和下颌前部的血流。使用卡尔·皮尔逊相关系数检验和学生氏非配对t检验对数据进行分析。
无论牙列状况和年龄如何，CBCT检查时的孔直径与USG所研究的吻合动脉直径之间均呈正相关（r = 0.290）。同样，CBCT上的孔直径与进入下颌骨的血量之间呈正相关（r = 0.447）。吻合动脉直径与进入下颌骨的血量之间呈正相关（r = 0.138）。
下颌前部有丰富的血管供应，与年龄和牙列状况无关。在种植体植入前可通过CBCT评估MLVC的尺寸和位置，以便手术医生了解该区域的血管情况。应进行更大样本量的进一步研究以证实这些发现。
