Digital Assessment of Dental Parameters in Italian and Mozambican Subjects with Ideal Occlusion and Permanent Dentition

Mario  Palone; Michele C.  Latini; Francesca  Cremonini; Louis Tomas Huanca  Ghislanzoni; Giorgio A.  Spedicato; Paolo  Albertini

Authors

Mario Palone
Michele C. Latini
Francesca Cremonini
Louis Tomas Huanca Ghislanzoni
Giorgio A. Spedicato
Paolo Albertini

Keywords:

Torque, Orthodontic Appliances, Orthodontics, Dental Occlusion

Abstract

Objective: To obtain reference values for tip, torque and in-out from digital models of Italian and Mozambican subjects in ideal occlusion using a repeatable and validated method and to compare these measurements with previously reported values. Material and Methods: Dental parameters were acquired from digital models of each subject, categorized to one of two groups: Italians (23 males, 27 females; mean age 28.3 years, ±5.7 years) and Mozambicans (14 males, 15 females; mean age, 23.4 years, ±5.9), using VAM software. All subjects had ideal occlusion, permanent dentition and no previous orthodontic treatment, fillings or prostheses. After normality of data was assumed (p<0.05), a paired t-test was performed to detect any statistical differences between the two groups (p<0.05). Then, classical inference (t-test and power analysis) was used to compare our data to those reported by other authors. Results: Mozambicans’ incisors were more proclined, while their upper molars appeared to be more prominent regarding Italians’. Italians shown greater tip values, especially at the upper first premolars and lower first molars. In-out values were comparable between the two groups, except for the upper molars (more prominent in Mozambicans) and lower first molar (more prominent in Italians). Unlike other reports, upper second molars displayed negative tip in our samples. Conclusion: Pre-adjusted appliances with standard prescription should not be expected to guarantee optimal outcomes. Prescriptions specific for ethnicities are recommended and reference values should be reconsidered.

References

Keim RG, Gottlieb EL, Vogels DS 3rd, Vogels PB. 2014 JCO study of orthodontic diagnosis and treatment procedures, Part 1: results and trends. J Clin Orthod 2014; 48(10):607-30.

Arreghini A, Lombardo L, Mollica F, Siciliani G. Torque expression capacity of 0.018 and 0.022 bracket slots by changing archwire material and cross section. Prog Orthod 2014; 15(1):53. https://doi.org/10.1186/s40510-014-0053-x

Lombardo L, Toni G, Stefanoni F, Mollica F, Guarneri MP, Siciliani G. The effect of temperature on the mechanical behavior of nickel-titanium orthodontic initial archwires. Angle Orthod 2013; 83(2):298-305. https://doi.org/10.2319/040612-287.1

Arreghini A, Trigila S, Lombardo L, Siciliani G. Objective assessment of compliance with intra- and extraoral removable appliances. Angle Orthod 2017; 87(1):88-95. https://doi.org/10.2319/020616-104.1

Perrini F, Lombardo L, Arreghini A, Medori S, Siciliani G. Caries prevention during orthodontic treatment: In-vivo assessment of high-fluoride varnish to prevent white spot lesions. Am J Orthod Dentofacial Orthop 2016; 149(2):238-43. https://doi.org/10.1016/j.ajodo.2015.07.039

Lombardo L, Carinci F, Martini M, Gemmati D, Nardone M, Siciliani G. Quantitive evaluation of dentin sialoprotein (DSP) using microbeads - a potential early marker of root resorption. Oral Implantol 2016; 9(3):132-42. https://doi.org/10.11138/orl/2016.9.3.132

Brown MW, Koroluk L, Ko CC, Zhang K, Chen M, Nguyen T. Effectiveness and efficiency of a CAD/CAM orthodontic bracket system. Am J Orthod Dentofacial Orthop 2015; 148(6):1067-74. https://doi.org/10.1016/j.ajodo.2015.07.029

Manfredini D, Stellini E, Gracco A, Lombardo L, Nardini LG, Siciliani G. Orthodontics is temporomandibular disorder-neutral. Angle Orthod 2016; 86(4):649-54. https://doi.org/10.2319/051015-318.1

Pisani L, Bonaccorso L, Fastuca R, Spena R, Lombardo L, Caprioglio A. Systematic review for orthodontic and orthopedic treatments for anterior open bite in the mixed dentition. Prog Orthod 2016; 17(1):28. https://doi.org/10.1186/s40510-016-0142-0

Lombardo L, Arreghini A, Bratti E, Mollica F, Spedicato G, Merlin M, et al. Comparative analysis of real and ideal wire-slot play in square and rectangular archwires. Angle Orthod 2015; 85(5):848-58. https://doi.org/10.2319/072214-510.1

Andrews LF. The 6-elements orthodontic philosophy: Treatment goals, classification, and rules for treating. Am J Orthod Dentofacial Orthop 2015; 148(6):883-7. https://doi.org/10.1016/j.ajodo.2015.09.011

Papageorgiou SN, Sifakakis I, Keilig L, Patcas R, Affolter S, Eliades T, et al. Torque differences according to tooth morphology and bracket placement: a finite element study. Eur J Orthod 2017; 39(4):411-8. https://doi.org/10.1093/ejo/cjw074

Lombardo L, Scuzzo G, Arreghini A, Gorgun O, Ortan YO, Siciliani G. 3D FEM comparison of lingual and labial orthodontics in en masse retraction. Prog Orthod 2014; 15(1):38. https://doi.org/10.1186/s40510-014-0038-9

Lombardo L, Stefanoni F, Mollica F, Laura A, Scuzzo G, Siciliani G. Three-dimensional finite-element analysis of a central lower incisor under labial and lingual loads. Prog Orthod 2012; 13(2):154-63. https://doi.org/10.1016/j.pio.2011.10.005

Andrews LF. The straight-wire appliance, origin, controversy, commentary. J Clin Orthod 1976; 10(2):99-114.

Di Fazio D, Lombardo L, Gracco A, D'Amico P, Siciliani G. Lip pressure at rest and during function in 2 groups of patients with different occlusions. Am J Orthod Dentofacial Orthop 2011; 139(1):e1-6. https://doi.org/10.1016/j.ajodo.2010.02.030

Ferrario VF, Sforza C, Colombo A, Carvajal R, Duncan V, Palomino H. Dental arch size in healthy human permanent dentitions: ethnic differences as assessed by discriminant analysis. Int J Adult Orthodon Orthognath Surg 1999; 14(2):153-62.

Czarnota J, Hey J, Fuhrmann R. Measurements using orthodontic analysis software on digital models obtained by 3D scans of plaster casts: Intrarater reliability and validity. J Orofac Orthop 2016; 77(1):22-30. https://doi.org/10.1007/s00056-015-0004-2

Fleming PS, Marinho V, Johal A. Orthodontic measurements on digital study models compared with plaster models: a systematic review. Orthod Craniofac Res 2011; 14(1):1-16. https://doi.org/10.1111/j.1601-6343.2010.01503.x

Luu NS, Nikolcheva LG, Retrouvey JM, Flores-Mir C, El-Bialy T, Carey JP, et al. Linear measurements using virtual study models. Angle Orthod 2012; 82(6):1098-106. https://doi.org/10.2319/110311-681.1

Sebata E. An orthodontic study of teeth and dental arch form on the Japanese normal occlusions. Shikwa Gakuho 1980; 80(7):945-69. [In Japanese].

Watanabe K, Koga M, Yatabe K, Motegi E, Isshiki Y. A morphometric study on setup models of Japanese malocclusions. Shikwa Gakuho 1996; 96:209-222.

Currim S, Wadkar PV. Objective assessment of occlusal and coronal characteristics of untreated normals: a measurement study. Am J Orthod Dentofacial Orthop 2004; 125(5):582-8. https://doi.org/10.1016/j.ajodo.2003.06.008

Doodamani GM, Khala AS, Manohar M, Umashankar. Assessment of crown angulations, crown inclinations, and tooth size discrepancies in a South Indian population. Contemp Clin Dent 2011; 2(3):176-81. https://doi.org/10.4103/0976-237X.86449

Kannabiran P, Thirukonda GJ, Mahendra L. The crown angulations and inclinations in Dravidian population with normal occlusion. Indian J Dent Res 2012; 23(1):53-8. https://doi.org/10.4103/0970-9290.99039

Mestriner MA, Enoki C, Mucha JN. Normal torque of the buccal surface of mandibular teeth and its relationship with bracket positioning: a study in normal occlusion. Braz Dent J 2006; 17(2):155-60. https://doi.org/10.1590/s0103-64402006000200014

Lombardo L, Perri A, Arreghini A, Latini M, Siciliani G. Three-dimensional assessment of teeth first-, second- and third-order position in Caucasian and African subjects with ideal occlusion. Prog Orthod 2015; 16:11. https://doi.org/10.1186/s40510-015-0086-9

Bernabé E, Flores-Mir C. Estimating arch length discrepancy through Little's Irregularity Index for epidemiological use. Eur J Orthod 2006; 28(3):269-73. https://doi.org/10.1093/ejo/cji112

Ferrario VF, Sforza C, Colombo A, Ciusa V, Serrao G. Three-dimensional inclination of the dental axes in healthy permanent dentitions--A cross-sectional study in a normal population. Angle Orthod 2001; 71(4):257-64.

Richmond S, Klufas ML, Sywanyk M. Assessing incisor inclination: a non-invasive technique. Eur J Orthod 1998; 20(6):721-6. https://doi.org/10.1093/ejo/20.6.721

Huanca Ghislanzoni LT, Lineberger M, Cevidanes LH, Mapelli A, Sforza C, McNamara JA Jr. Evaluation of tip and torque on virtual study models: a validation study. Prog Orthod 2013; 14:19. https://doi.org/10.1186/2196-1042-14-19

Lopez MA, Andreasi Bassi M, Confalone L, Gaudio RM, Lombardo L, Lauritano D. Retrospective study on bone-level and soft-tissue-level cylindrical implants. J Biol Regul Homeost Agents 2016; 30(2 Suppl 1):43-8.

Lopez MA, Andreasi Bassi M, Confalone L, Gaudio RM, Lombardo L, Lauritano D. Clinical outcome of 215 transmucosal implants with a conical connection: a retrospective study after 5-year follow-up. J Biol Regul Homeost Agents 2016; 30(2 Suppl 1):55-60.

Bishara SE, Jakobsen JR, Abdallah EM, Fernandez Garcia A. Comparisons of mesiodistal and buccolingual crown dimensions of the permanent teeth in three populations from Egypt, Mexico, and the United States. Am J Orthod Dentofacial Orthop 1989; 96(5):416-22. https://doi.org/10.1016/0889-5406(89)90326-0

Lavelle CL. Maxillary and mandibular tooth size in different racial groups and in different occlusal categories. Am J Orthod 1972; 61(1):29-37. https://doi.org/10.1016/0002-9416(72)90173-x

Merz ML, Isaacson RJ, Germane N, Rubenstein LK. Tooth diameters and arch perimeters in a black and a white population. Am J Orthod Dentofacial Orthop 1991; 100(1):53-8. https://doi.org/10.1016/0889-5406(91)70049-3

Nojima K, McLaughlin RP, Isshiki Y, Sinclair PM. A comparative study of Caucasian and Japanese mandibular clinical arch forms. Angle Orthod 2001; 71(3):195-200.

Gafni Y, Tzur-Gadassi L, Nojima K, McLaughlin RP, Abed Y, Redlich M. Comparison of arch forms between Israeli and North American white populations. Am J Orthod Dentofacial Orthop 2011; 139(3):339-44. https://doi.org/10.1016/j.ajodo.2009.03.047

Bayome M, Sameshima GT, Kim Y, Nojima K, Baek SH, Kook YA. Comparison of arch forms between Egyptian and North American white populations. Am J Orthod Dentofacial Orthop 2011; 139(3):e245-52. https://doi.org/10.1016/j.ajodo.2009.11.012

Palone M, Spedicato GA, Lombardo L. Analysis of tooth anatomy in adults with ideal occlusion: A preliminary study. Am J Orthod Dentofacial Orthop 2020; 157(2):218-27. https://doi.org/10.1016/j.ajodo.2019.03.024