Gender Differences in the Morphological Characteristics of the Nasopalatine Canal and the Anterior Maxillary Bone - CBCT Study

Abstract The aim of this study was to investigate the gender differences in anatomical and morphometric characteristics of the nasopalatine canal–NPC and horizontal dimensions of the anterior maxilla by CBCT, which could be of interest for clinicians who perform implant surgery in this region. A retrospective quantitative study was conducted using CBCT images from the radiological database of the Department of Dentistry (Kragujevac) on a total of 113 participants (63 male and 50 female). The results of our study confirmed no gender difference in the distribution of NPC type, while the most frequent NPC type confirmed gender variations (cylindrical in females, funnel in males), but the lowest incidence of NPC type in both males and females was banana-type. The NPC length was significantly increased in males with no significant gender impact on medio-lateral (M-L) and antero-posterior (A-P) dimensions of the incisive foramen, as well as the A-P dimension of the nasal foramen. Linear regression analysis revealed the significant correlation between the M-L dimension of incisive foramen and the anterior maxilla diameter at all bone levels for males, and between the NPC length and the anterior maxilla diameter only in females at the level D. Also, both NPC type and gender significantly affected the correlations between the estimated parameters (females showed significant correlation only in funnel NPC type at the level D, while males showed significant correlation in both funnel NPC type at the level A, but also in hourglass-type at the level D). Those results imply significant gender impact in planning of various surgical interventions in the anterior maxilla region.

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Morphological Characteristics of the Nasopalatine Canal and the Relationship with the Anterior Maxillary Bone—A Cone Beam Computed Tomography Study

Diagnostics ◽

10.3390/diagnostics11050915 ◽

2021 ◽

Vol 11 (5) ◽

pp. 915

Author(s):

Pavle Milanovic ◽

Dragica Selakovic ◽

Milica Vasiljevic ◽

Nemanja U. Jovicic ◽

Dragan Milovanović ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Morphological Characteristics ◽

Cone Beam ◽

Morphometric Characteristics ◽

Anterior Maxilla ◽

Nasopalatine Canal ◽

Implant Placement ◽

Significant Difference ◽

Incisive Foramen

The aim of this study was to evaluate the interconnection between the type of nasopalatine canal (NPC) and morphometric characteristics of the anterior maxilla. The investigation involved 113 subjects, and the morphometric parameters were obtained using cone beam computed tomography (CBCT). NPC shapes were classified into four types: banana-, hourglass-, cylindrical-, and funnel-shaped (distribution of approximately 9, 25, 31, and 35%, respectively). The analysis revealed that the NPC shape was significantly connected with the morphometric properties of anterior maxilla horizontal dimensions. In general, a banana-shaped NPC was accompanied with an overall reduction in anterior maxilla diameters when compared to other NPC shapes, with no significant difference between the other three NPC shapes. Furthermore, the morphometric characteristics that depend on NPC shape at the sagittal cross-section were significantly correlated with diameters of the incisive foramen, nasal foramen, and NPC length. According to the results of our study, it seems that the presented analyses of morphometric data may allow useful insight into the algorithms of various interconnections between the measures obtained in the region of the anterior maxilla, which could be of interest for a time rationale approach when planning some surgical procedures, such as immediate dental implant placement planning.

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Anatomical Patterns of the Nasopalatine Canal and Incisive Foramen in an African Setting – a Cross-sectional Study

10.21203/rs.3.rs-1146197/v1 ◽

2021 ◽

Author(s):

Krishan Sarna ◽

Merna Akram Estreed ◽

Khushboo Jayant Sonigra ◽

Thomas Amuti ◽

Florence Opondo ◽

...

Keyword(s):

Sexual Dimorphism ◽

Alveolar Bone ◽

Bone Thickness ◽

Cross Sectional ◽

Anterior Maxilla ◽

Maxillary Bone ◽

Nasopalatine Canal ◽

Anterior Nasal Spine ◽

Incisive Foramen ◽

The Mean

Abstract Purpose: Surgical procedures revolving around the anterior maxilla are of great interest due to their debilitating facial aesthetics and nerve injury effects if complications arise. Hence, sufficient knowledge concerning the morphology and morphometry of the nasopalatine canal (NPC) and incisive foramen (IF) is necessary to prevent such complications from arising. Materials and Methods: Measurements of the NPC and the IF were carried out on 150 CBCT scans. The maxillary bone thickness anterior to the NPC was measured at 3 levels. Independent t-test and chi-square test were performed to determine the presence of sexual dimorphism. Results: The presence of one Stenson’s foramen was most prevalent. The mean length of NPC was 13.21 ± 3.25 mm with significantly longer canals in males. The most prevalent shape of NPC was cylindrical in sagittal view and a single canal in coronal view. The mean angulation of NPC was 118.42° to the horizontal plane. The average dimensions of the IF were 3.53 mm and 3.07 mm in the anteroposterior and mediolateral diameter respectively while the most common shape was round. The anterior maxillary bone was thicker in males and generally reduced in thickness from the anterior nasal spine superiorly towards the alveolar crest inferiorly. Conclusion: This study highlights the anatomical characteristics of the NPC and IF, with significant sexual dimorphism observed regarding the number of Stenson’s foramina, length of NPC, shapes of the NPC and IF as well as alveolar bone thickness anterior to NPC.

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Clinical Evaluation of the Nasopalatine Canal in Implant-Prosthetic Treatment: A Pilot Study

Dentistry Journal ◽

10.3390/dj8020030 ◽

2020 ◽

Vol 8 (2) ◽

pp. 30

Author(s):

Enrique Fernández Bodereau ◽

Viviana Yolanda Flores ◽

Pablo Naldini ◽

Daniel Torassa ◽

Patricia Tortolini

Keyword(s):

Clinical Performance ◽

Three Dimensional ◽

Anatomical Variations ◽

Graft Material ◽

Central Incisor ◽

Anterior Maxilla ◽

Aesthetic Result ◽

Nasopalatine Canal ◽

Facial Contour ◽

Incisive Foramen

Implant-prosthetic rehabilitation of missing teeth in the anterior maxilla is often challenging due to ongoing bone resorption and remodeling events and may require regeneration procedures involving the nasopalatine canal (NPC). We describe a surgical approach with a block graft in relation to the NPC and evaluate clinical performance, sensory perception, and aesthetic result of the implant-prosthetic treatment over a two- to nine-year (mean: 3.5 years) follow-up. Ten implants (six in the right central incisor and four in the left central incisor) were, respectively, placed in 10 consecutive patients with bone defects affecting the NPC and unfavorable widening of the incisive foramen. Treatment stages included: (1) Diagnosis: evaluation of clinical-aesthetic parameters using Cone Beam Computed Tomography; (2) Surgery: block graft placement by palatine and incisal with simultaneous guided bone regeneration, and late (6–10 months) implant placement; (3) Prosthetics: placement of a screw-retained crown (torque of 32 N/cm). At treatment initiation, all the NPCs evaluated in our study were free of pathologies. Treatment evaluation included bone crest thickness, neurosensory status, patients’ treatment perception, and pink and white aesthetic scores (PES/WES). Pre-surgery, anterior ridge thickness at the level of the incisive foramen was (mean ± SD) 3.5 ± 2 mm, 5.4 ± 1.5 mm, and 6.1 ± 1.9 mm at heights of 4, 8, and 14 mm apical to the marginal bone crest, respectively. Post-treatment values were, respectively, 10.1 ± 2.0 mm, 10.5 ± 1.0 mm, and 13.4 ± 3.0 mm. The perception of treatment with the aesthetic pink and white indices (PES/WES) was an average of 7.5 and 7 points, respectively, out of a total of 10 each index, with a recovery of 100% of the neurosensory perception of the area. We propose that bone augmentation using block and particulate graft material can compensate for anatomical variations in the NPC, optimize implant’s three-dimensional positioning and improve facial contour, providing tissue and implant stability and good aesthetic outcomes.

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

Diagnostics ◽

10.3390/diagnostics11122345 ◽

2021 ◽

Vol 11 (12) ◽

pp. 2345

Author(s):

Aleksandra Arnaut ◽

Pavle Milanovic ◽

Milica Vasiljevic ◽

Nemanja Jovicic ◽

Radisa Vojinovic ◽

...

Keyword(s):

Risk Factor ◽

Methodological Approach ◽

Morphometric Characteristics ◽

Anterior Maxilla ◽

Additional Tool ◽

Nasopalatine Canal ◽

Incisive Foramen ◽

The Impact ◽

The Relationship ◽

Determining Factor

The aim of this study was to evaluate the impact of the nasopalatine canal (NPC) shape and its morphometric characteristics on expected teeth movement by assessing the distance to maxillary central incisors (MCIs) according to NPC type. The retrospective study was performed on 133 CBCT images. The following parameters were obtained: the antero-posterior diameter (A-P) of the nasal foramen (NF), canal length, A-P and mediolateral diameter (M-L) of the incisive foramen (IF), and the distance between NPC and MCIs. With the exception of being hourglass-shaped, each NPC shape showed specific impacts of NPC shape on the relationship between NPC diameters at different sections and distances to MCIs. In banana-shaped NPC, a significant correlation was observed for A-P NF diameter, while in cylindrical-shaped NPC, a significant correlation was observed for NPC length. The increase in M-L IF, A-P IF, A-P NF, and NPC length in funnel-shaped NPC may be a risk factor for interventions that could result in teeth movement. According to the results, it seems that the proposed methodological approach for analysis of CBCT slices in the anterior maxilla may offer detailed information that could be an additional tool in planning the procedures that result in expected teeth movement.

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Three-dimensional Assessment of the Nasopalatine Canal and the Surrounding Bone Using Cone-beam Computed Tomography

Journal of Periodontology & Implant Dentistry ◽

10.15171/jpid.2016.001 ◽

2018 ◽

Vol 8 (1) ◽

pp. 1-7 ◽

Cited By ~ 1

Author(s):

Fateme Salemi ◽

Fazele Atarbashi Moghadam ◽

Zahra Shakibai ◽

Maryam Farhadian

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Anterior Maxilla ◽

Nasopalatine Canal ◽

Size And Shape ◽

Anterior Nasal Spine ◽

Incisive Foramen ◽

School Of Dentistry ◽

Labial Surface

Background and aims. Because of increasing concerns about surgeries in the anterior maxilla, including implant placement, it is necessary to examine the morphology of the nasopalatine canal and its surrounding bones. This study aimed to analyze the shape and position of the nasopalatine canal and incisive foramen using cone-beam computed tomography (CBCT). Materials and methods. CBCT images of 110 patients referred to Hamadan School of Dentistry were examined. The size and shape of the nasopalatine canal and incisive foramen, the distance between the incisive foramen and the anterior nasal spine, and the distance between the anterior border of the nasopalatine canal and the labial surface of the buccal plate were recorded. Results. The nasopalatine canal length decreased and its diameter increased with aging. The canal was found to be longer and wider in men. Patients without incisors had longer and thicker nasopalatine canals. The distance from the nasopalatine canal to the labial surface of the buccal plate was not gender-related but decreased with age. The distance to the labial cortical surface decreased significantly with loss of incisors. Conclusion. Given the diversities in the size and shape of nasopalatine canals, it is highly important to perform CBCT to prevent neurovascular damage.

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Brief Report. The PCL-R and Gender

European Journal of Psychological Assessment ◽

10.1027//1015-5759.16.3.147 ◽

2000 ◽

Vol 16 (3) ◽

pp. 147-149 ◽

Cited By ~ 44

Author(s):

Martin Grann

Keyword(s):

Gender Differences ◽

Sexual Behavior ◽

Discriminant Analysis ◽

Juvenile Delinquency ◽

Violent Offenders ◽

Matched Pairs ◽

Psychopathy Checklist ◽

Psychopathy Checklist Revised ◽

And Gender

Summary: Hare's Psychopathy Checklist - Revised (PCL-R; Hare, 1991 ) was originally constructed for use among males in correctional and forensic settings. In this study, the PCL-R protocols of 36 matched pairs of female and male violent offenders were examined with respect to gender differences. The results indicated a few significant differences. By means of discriminant analysis, male Ss were distinguished from their female counterparts through their relatively higher scores on “callous/lack of empathy” (item 8) and “juvenile delinquency” (item 18), whereas the female Ss scored relatively higher on “promiscuous sexual behavior” (item 11). Some sources of bias and possible implications are discussed.

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Personal Problem Solving of Partners in Divorce Proceedings

Rorschachiana Journal of the International Society for the Rorschach ◽

10.1027/1192-5604/a000053 ◽

2015 ◽

Vol 36 (1) ◽

pp. 82-103 ◽

Cited By ~ 1

Author(s):

Tereza Soukupova ◽

Petr Goldmann

Keyword(s):

Gender Differences ◽

Problem Solving ◽

Thematic Apperception Test ◽

Scoring Systems ◽

Personal Control ◽

Personality Characteristics ◽

Personal Problem ◽

Thematic Apperception ◽

And Gender ◽

The Given

Abstract. The Thematic Apperception Test is one of the most frequently administered apperceptive techniques. Formal scoring systems are helpful in evaluating story responses. TAT stories, made by 20 males and 20 females in the situation of legal divorce proceedings, were coded for detection and comparison of their personal problem solving ability. The evaluating instrument utilized was the Personal Problem Solving System-Revised (PPSS-R) as developed by G. F. Ronan. The results indicate that in relation to card 1, men more often than women saw the cause of the problem as removable. With card 6GF, women were more motivated to resolve the given problem than were men, women had a higher personal control and their stories contained more optimism compared to men’s stories. In relation to card 6BM women, more often than men, used emotions generated from the problem to orient themselves within the problem. With card 13MF, the men’s level of stress was less compared to that of the women, and men were more able to plan within the context of problem-solving. Significant differences in the examined groups were found in those cards which depicted significant gender and parental potentials. The TAT can be used to help identify personality characteristics and gender differences.

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