Cone beam computed tomographic–Based retrospective study on newark population for the assessment of distance between incisive canal and maxillary central incisors: Clinical implications

The Shape of Nasopalatine Canal as a Determining Factor in Therapeutic Approach for Orthodontic Teeth Movement—A CBCT Study

“…As previously reported [ 41 ], those morphometric parameters could be of clinical relevance for the interventions in the anterior maxilla, such as implant placement. However, morphometric analyses, such as those performed in this study, could also influence other clinical aspects, since it has been shown that the increase in NPC width (M-L IF) was accompanied by higher prevalence of NPC perforation during maximum central incisors retraction [ 20 , 22 ]. Furthermore, the enhancement of ML-IF diameter can also be addressed for subsequent complications, such as orthodontically induced inflammatory root resorption [ 12 , 27 , 50 ].…”

“…Those results do not correspond to the observations of Gull [ 10 ] and Cho and coworkers [ 39 ], who reported that the average distance was approximately 5–6 mm, with a decrease from lower to upper levels. In addition to the obvious diversity of those data, clinical relevance of those parameters could be based on the fact that a higher rate of NPC invasion (54%) caused by incisors retraction was observed in patients where tooth movement was above 4 mm [ 20 ] than in patients with retraction below 2 mm (NPC invasion of 12%). Those data may result in a reconsideration of Profit’s and Ackerman’s recommendations for maximum root retraction of 7 mm [ 15 ], as already proposed by Ono [ 14 ].…”

“…The results of earlier studies confirmed that the palatal cortical plate was a limiting (anatomical) factor for MCI retractions [ 16 , 17 , 18 , 19 ]. However, since NPC is located between the palatal cortical plate and central incisors, it is not surprising why recent studies [ 20 , 21 ] have shown that their presence and morphometric characteristics should be also included as one of the key factors in planning procedures accompanied by teeth movement in the anterior maxilla in order to avoid contact of MCIs and NPC and even invasion into NPC [ 21 ]. Thus, Yu and collaborators noted that root retraction above 4 mm resulted in NPC invasion in 54% of patients [ 21 ].…”

“…Still, it seems that the assessment of the architecture of the region that includes both NPC and MCIs may have clinical importance in planning orthodontic interventions accompanied by significant maxillary incisors retraction [ 20 ]. Therefore, our study aimed to evaluate the potential impact of the NPC shape on expected teeth movement by means of the distance to MCIs according to NPC type.…”

Cone Beam Computed Tomography (CBCT) Evaluation of Alveolar Bone Thickness and Root Angulation in Anterior Maxilla for Planning Immediate Implant Placement

“…The anterior maxilla is the prime esthetic zone of the mouth and the most common site prone to injury and trauma amongst the young population worldwide. The demand for highly esthetic restorations in this area is increasing and implant is the restoration of choice [ 3 - 4 ]. It is essential to have a conservative approach while achieving an excellent esthetic replacement [ 5 ].…”