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Influence of Tooth Morphology on Local Mesh Density Distribution in Intraoral Scanner-Derived STL Models of Selected Maxillary Teeth
Dubravka Knezović Zlatarić
,Maja Žagar
,Egon Neskusil
,Daren Dreo Bračun
,Robert Ćelić
Background/Objectives: The quality of intraoral scanner-derived digital models depends not only on deviation-based accuracy, but also on how scanned surfaces are reconstructed into a polygonal mesh. The aim of this prospective within-subject observational study was to evaluate whether tooth morphology influences local mesh density distribution in intraoral scanner-derived STL models of selected maxillary teeth. Methods: Twenty participants underwent maxillary intraoral scanning using a Medit i900 wired intraoral scanner under standardized clinical conditions. For each participant, the buccal surfaces of the maxillary right central incisor (11), canine (13), first premolar (15), and first molar (16) were selected as regions of interest. Surface area (A), number of vertices (V), and number of faces (F) were recorded, and the surface-normalized mesh density parameters vertices per unit area (V/A) and faces per unit area (F/A) were calculated. Comparisons among tooth types were performed using repeated-measures analysis of variance (ANOVA) with Bonferroni post hoc correction. Results: Significant differences were found among tooth types for both V/A and F/A (p < 0.001). Mean V/A values were 18.2 ± 1.9 for tooth 11, 19.8 ± 1.4 for tooth 13, 23.8 ± 1.7 for tooth 15, and 22.9 ± 2.0 vertices/mm² for tooth 16. Mean F/A values were 34.3 ± 3.6, 37.5 ± 2.7, 44.4 ± 3.3, and 42.9 ± 3.8 faces/mm², respectively. Post hoc comparisons showed significant differences between teeth 11 and 13, 11 and 15, 11 and 16, 13 and 15, and 13 and 16, whereas no significant difference was observed between teeth 15 and 16. Conclusions: Tooth morphology significantly influenced local mesh density distribution in intraoral scanner-derived STL models of selected maxillary teeth. These findings suggest that local anatomical form affects STL mesh reconstruction under standardized in vivo scanning conditions and support local mesh density analysis as a useful complementary approach to conventional deviation-based digital assessment.
Background/Objectives: The quality of intraoral scanner-derived digital models depends not only on deviation-based accuracy, but also on how scanned surfaces are reconstructed into a polygonal mesh. The aim of this prospective within-subject observational study was to evaluate whether tooth morphology influences local mesh density distribution in intraoral scanner-derived STL models of selected maxillary teeth. Methods: Twenty participants underwent maxillary intraoral scanning using a Medit i900 wired intraoral scanner under standardized clinical conditions. For each participant, the buccal surfaces of the maxillary right central incisor (11), canine (13), first premolar (15), and first molar (16) were selected as regions of interest. Surface area (A), number of vertices (V), and number of faces (F) were recorded, and the surface-normalized mesh density parameters vertices per unit area (V/A) and faces per unit area (F/A) were calculated. Comparisons among tooth types were performed using repeated-measures analysis of variance (ANOVA) with Bonferroni post hoc correction. Results: Significant differences were found among tooth types for both V/A and F/A (p < 0.001). Mean V/A values were 18.2 ± 1.9 for tooth 11, 19.8 ± 1.4 for tooth 13, 23.8 ± 1.7 for tooth 15, and 22.9 ± 2.0 vertices/mm² for tooth 16. Mean F/A values were 34.3 ± 3.6, 37.5 ± 2.7, 44.4 ± 3.3, and 42.9 ± 3.8 faces/mm², respectively. Post hoc comparisons showed significant differences between teeth 11 and 13, 11 and 15, 11 and 16, 13 and 15, and 13 and 16, whereas no significant difference was observed between teeth 15 and 16. Conclusions: Tooth morphology significantly influenced local mesh density distribution in intraoral scanner-derived STL models of selected maxillary teeth. These findings suggest that local anatomical form affects STL mesh reconstruction under standardized in vivo scanning conditions and support local mesh density analysis as a useful complementary approach to conventional deviation-based digital assessment.
Posted: 09 April 2026
Effects of Intraoperative Photobiomodulation on Osteogenic Differentiation of Human Jaw Bone Explants Harvested During Cyst Surgery: A Paired Ex Vivo Translational Experimental Study
Grigore Ioan Vlad
,Păcurar Mariana
,Ovidiu Pop
,Sorana Maria Bucur
,Elina Teodorescu
,Anca Oana Dragomirescu
,Ștefan Milicescu
,Alina Ormenișan
Posted: 09 April 2026
Detecting Residual Root Canal Filling Material After Retreatment: Cone-Beam Computed Tomography and Digital Microscopy Compared with Micro-Computed Tomography
Detecting Residual Root Canal Filling Material After Retreatment: Cone-Beam Computed Tomography and Digital Microscopy Compared with Micro-Computed Tomography
Mohamad Alouda
,Samar Akil
,Mohammad Tamer Abbara
,Ammar Eid
,Imad-Addin Almasri
,Yasser Alsayed Tolibah
,Ziad D. Baghdadi
Posted: 08 April 2026
Prevalence of Dental Anxiety and the Influence of Various Factors in Children Age 12 to 18 Years in Zagreb, Croatia
Lucija Koturić Čabraja
,Walter Dukić
,Matea Lapas Barisic
Posted: 06 April 2026
Concept of Transmucosal Biological Complex and Its Clinical Implications in Dental Implantology
Zhao Yang
Posted: 31 March 2026
Analysis of the State of Psycho-Emotional Adaptation of Patients with Various Forms of Oncological Diseases of the Maxillofacial Region at Certain Stages of Their Treatment and Rehabilitation Process
Oleksandr Belikov
,Oleksandra Roshchuk
,Natalia Belikova
,Liudmyla Belikova
,Maksym Bernik
Posted: 24 March 2026
Dose-Dependent Osteoinduction by rhBMP-2-Loaded β-Tricalcium Phosphate Scaffolds in Rabbit Critical-Sized Calvarial Defects: Histological, Histomorphometric, CD31 Immunohistochemical Evaluation
Solaf Abdulqadir Mustafa
,Chenar Anwar Mohammad
,Rafal Abdulrazaq Alrawi
Posted: 23 March 2026
Informed Consent in Artificial Intelligence-Augmented Dentistry: Clinical Care, Research, and the Dentist–Patient–AI Relationship: A Scoping Review
Tamara Mihut
,Corina Marilena Cristache
,Luminita Oancea
,Victor Nimigean
Posted: 23 March 2026
Tooth Shape as a Psychomorphological Indicator of Personality: Clinical Observations
Aleksandra Pecheva
Background/Objectives: Harmony between tooth morphology and facial features is a key factor in aesthetic dentistry. The sufficient smile design requires the integration of functional, biological aspects, individual identity and personality traits. The present study investigated the relationship between the shape of teeth and personality characteristics. Methods: A cross-sectional observational study was conducted among 142 participants. Data were collected through a standardized questionnaire, including demographic indicators, assessment of the shape of the teeth and personality characteristics according to two models: type 1 (choleric, sanguine, melancholic, phlegmatic) and type 2 (extraversion, openness, conscientiousness, focus on others, neuroticism). Pearson’s χ² test and Cramer’s coefficient (V) were applied to analyze the dependencies. Results: A statistically significant relationship was found between tooth shape and personality type 1 (χ²(9)=61.96, p<0.001; V=0.38), with a medium to strong effect. The oval shape was associated mainly with melancholic temperament, the triangular shape with sanguine, the rectangular shape with choleric, and the square shape with melancholic and phlegmatic types. A significant relationship was also observed between tooth shape and personality type 2 (χ²(12)=41.82, p<0.001; V=0.31), with a medium effect, with the different morphological shapes showing specific distribution profiles according to personality traits. No statistically significant relationship was found between the two personality models (χ²(12)=18.10, p=0.113). Conclusions: The shape of the frontal teeth is associated with temperament-based and trait-oriented personality characteristics, with the relationship being stronger in the classical temperament typology. This supports the hypothesis that dental morphology may reflect biologically determined aspects of personality and be relevant to individualized aesthetic dental design.
Background/Objectives: Harmony between tooth morphology and facial features is a key factor in aesthetic dentistry. The sufficient smile design requires the integration of functional, biological aspects, individual identity and personality traits. The present study investigated the relationship between the shape of teeth and personality characteristics. Methods: A cross-sectional observational study was conducted among 142 participants. Data were collected through a standardized questionnaire, including demographic indicators, assessment of the shape of the teeth and personality characteristics according to two models: type 1 (choleric, sanguine, melancholic, phlegmatic) and type 2 (extraversion, openness, conscientiousness, focus on others, neuroticism). Pearson’s χ² test and Cramer’s coefficient (V) were applied to analyze the dependencies. Results: A statistically significant relationship was found between tooth shape and personality type 1 (χ²(9)=61.96, p<0.001; V=0.38), with a medium to strong effect. The oval shape was associated mainly with melancholic temperament, the triangular shape with sanguine, the rectangular shape with choleric, and the square shape with melancholic and phlegmatic types. A significant relationship was also observed between tooth shape and personality type 2 (χ²(12)=41.82, p<0.001; V=0.31), with a medium effect, with the different morphological shapes showing specific distribution profiles according to personality traits. No statistically significant relationship was found between the two personality models (χ²(12)=18.10, p=0.113). Conclusions: The shape of the frontal teeth is associated with temperament-based and trait-oriented personality characteristics, with the relationship being stronger in the classical temperament typology. This supports the hypothesis that dental morphology may reflect biologically determined aspects of personality and be relevant to individualized aesthetic dental design.
Posted: 23 March 2026
Management of Deep Caries in Primary Molars: A Comparative Analysis of the American, European, and International Guidelines
Bashayer Ayed Alhersh
Posted: 18 March 2026
Observational Study of the Association Between Oral Helicobacter pylori, Fixed Orthodontic Appliances, and Gastric Cancer Risk
Ioana Maria Crișan
,Alex Crețu
,Sorana-Maria Bucur
Posted: 17 March 2026
The Adjunctive Role of Probiotics in Periodontal Therapy: A Narrative Review
The Adjunctive Role of Probiotics in Periodontal Therapy: A Narrative Review
Natalia de Campos Kajimoto
,Cristhiam de Jesus Hernandez Matinez
,Peter Michael Loomer
,Yvonne de Paiva Buischi
,Ana Carolina Punhagui Hernandes
Posted: 13 March 2026
Ultrasound-Guided Intra-Articular Infiltration of Hyaluronic Acid, Lidocaine, and Cortisone in Patients with Temporomandibular Disorders (TMD): Our Experience
Giuseppe Messina
,Francesco Mantia
,Pietro Cataldo
,Angelo Iovane
Posted: 12 March 2026
Risk Assessment of Transcrestal Maxillary Sinus Floor Elevation: A Narrative Review
Zhao Yang
Posted: 12 March 2026
Light-Assisted In-Office Tooth Whitening: A Pilot Randomized Clinical Trial Using Digital Spectrophotometry
Carmen Amititeloaie
,Tinela Panaite
,Carina Balcos
,Marcel Costuleanu
Posted: 12 March 2026
Effect of Horizontal Angulation on Radiographic Measurement of the Contact Point–Alveolar Bone Crest Distance: An In Vitro Study
Sari A. Mahasneh
,Michaela Goodwin
,Joanne Cunliffe
Posted: 11 March 2026
Post and Core for Telescopic Crown Retained Dentures – An In Vitro Comparison of Different Materials Using Chewing Simulation
Jonas Adrian Helmut Vogler
,Milan Rachold
,Bernd Wöstmann
,Peter Rehmann
,Kay-Arne Walther
Posted: 10 March 2026
Mucositis Associated with Mycoplasma pneumoniae: Systematic Review and Case Series
Silvia D’Agostino
,Vanja Granberg
,Giulia Valentini
,Massimo Corsalini
,Luisa Limongelli
Posted: 05 March 2026
Adding the Psychological Perspective to Traditional Prevention in Pediatric Dentistry by PaFein+ Project: Trained Parents Can Help
Aneta Munteanu
,Arina Vinereanu
,Ruxandra Sfeatcu
,Mihaela Tănase
,Ilie-Andrei Condurache
,Annelyse Garret-Bernardin
,Alessandra Putrino
,Özgür Önder Kușçu
,Sertac Peker
,Betul Kargul
+1 authors
Posted: 03 March 2026
Childhood Obesity and Craniofacial Growth: An Orthodontic Cephalometric Study
Sorana Maria Bucur
,Dorin Ioan Cocoș
,Cristian Doru Olteanu
,Mioara Decusară
,Mariana Păcurar
,Eugen Silviu Bud
Posted: 03 March 2026
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