Radiographic and clinical evaluation of anterior nasal spine anatomy on anterior maxillary implant placement

The anterior nasal spine (ANS) is an important anatomical landmark that can influence on anterior implant placement. Therefore, it is of interest to evaluate ANS morphology (radiographic and clinical) and its influence on planning of anterior implants placement. Hencec, 100 adult subjects were divided into Group A with favorable ANS morphology; Group B with unfavorable ANS morphology). Cone-beam CT (CBCT) measurements included ANS length (mm), ANS angulation (°), labial cortical thickness, available alveolar bone height and width at planned implant sites. Clinical assessment recorded ridge contour and palpation findings. ANS anatomy significantly correlates with anterior maxillary bone availability and influences immediate implant planning.