Acta Scientific Dental Sciences (ASDS)(ISSN: 2581-4893)

Review Article Volume 5 Issue 2

Analysis of Malocclusion and its Characteristics in the Referred Free State Orthodontic Patients

Mandla Dominic Nyakale*

Senior Specialist, Faculty of Dentistry, Department of Orthodontics, University of the Western Cape and University of Limpopo, South Africa

*Corresponding Author: Mandla Dominic Nyakale, Senior Specialist, Faculty of Dentistry, Department of Orthodontics, University of the Western Cape and University of Limpopo, South Africa.

Received: December 09, 2020; Published: January 18, 2021



Background: Planning and provision of orthodontic services may require some baseline epidemiological data with regards to the distribution of malocclusion and its severity within a given population.

Aim: To analyze the distribution of malocclusion and its occlusal characteristics in Black patients referred to the Free State orthodontic clinic with regards to age, gender and Angle’s malocclusion.

Materials and Method: Study models of 391 orthodontic patients (235 female and 156 male) with the mean age of 15.4 years were analyzed to determine the distribution of malocclusion using Angle’s classification and other occlusal characteristics such as overjet, overbite, open bite, crossbite and the degree of incisor irregularity.

Result: The malocclusion status in a sample of the Free State patients seeking orthodontic treatment was recorded as 72.1% for Class I, 17.1% for Class II, and 10.8% for Class III subjects respectively. The occurrence of occlusal discrepancies was large overjet in 30.4%, deep overbite in 25.8%, anterior open bite in 9.2%, anterior crossbite in 61.4%, posterior crossbite in 27.4% and increased incisor irregularity in 75.7% of the total sample. 24.3% of the subjects required little or no treatment, 33.2% required moderate treatment, and 42.5% required great/severe treatment according to the modified DHC scores.

Conclusion: The need for orthodontic treatment in this sample is high and the prevalent occlusal characteristics are complex in nature. Treatment of these malocclusions will require qualified orthodontic specialists to carry out.

Keywords: Angle’s Classification; Free State; Dental Health Component; Overjet; Overbite; Crossbite; Crowding; Occlusal Traits



    1. Marcos AVB and WM Andre. “An Overview of the prevalence of malocclusion in 6-10 year old children in Brazil”. Dental Press Journal of Orthodontics 5 (2010): 113-122.
    2. Booysen JL and AMP Harris. “Orthodontic treatment need and demand in the Upington area of the Northern Cape Province”. Research Dissertation UWC (2017).
    3. Brook P and W Shaw. “The Development of an index of orthodontic treatment priority”. European Journal of Orthodontics 11 (1989): 309-320.
    4. Burden DJ., et al. “Modified IOTN: An orthodontic treatment need index for use in oral health surveys”. Community Dentistry and Oral Epidemiology 29 (2001): 220-225.
    5. Utomi IL and CO Onyeaso. “Malocclusion and orthodontic treatment need of patients attending the Lagos university teaching hospital, Lagos, Nigeria”. Tropical Dental Journal 38 (2015): 23-30.
    6. Ajayi EO and I Ize-lyamu. “Malocclusion and Occlusal Traits among orthodontic patients seen at the university of Benin teaching Hospital, Nigeria”. Nigerian Dental Journal 18 (2010): 1.
    7. Mtaya M., et al. “Prevalence of malocclusions and its relationship with socio-demographic factors, dental caries, and oral hygiene in 12-14 year old Tanzanian schoolchildren”. European Journal of Orthodontics 31 (2009): 467-470.
    8. Ismail K., et al. “Demographic characteristics and analysis of malocclusions of orthodontic patients seen at IIUM dental specialist clinic, Kuantan, Pahang”. China 2 (2017): 107-111.
    9. Karaiskos N., et al. “Preventive and interceptive orthodontic treatment needs of an inner-city group of 6 and 9 year old Canadian children”. Journal of the Canadian Dental Association 9 (2005): 649a-649e.
    10. Foster TD and AJ Walpole. “A survey of malocclusion and the need for orthodontic treatment in Shropshire school population”. British Journal of Orthodontics 3 (1973): 73-78.
    11. Steigman S., et al. “Prevalence and severity of malocclusion in Israel Arab urban children aged 13-15 years of age”. American Journal of Orthodontics 84 (1983): 337-343.
    12. de Muňiz BR. “Epidemiology of malocclusion in Argentine children”. Community Dentistry and Oral Epidemiology 14 (1986): 221-224.
    13. Woon KC., et al. “Permanent dentition occlusion in Chinese, Indian and Malay groups in Malaysia”. Australian Journal of Orthodontics 11 (1989): 45-48.
    14. Al-Emran S., et al. “Prevalence of malocclusion and need for orthodontic treatment in Saudi Arabia”. Community Dentistry and Oral Epidemiology 18 (1990): 253-255.
    15. Tang EL. “Occlusal features of Chinese adults in Hong Kong”. Australian Orthodontic Journal 13 (1994): 159-163.
    16. Shen L., et al. “Prevalence of malocclusion in primary dentition in mainland China, 1988 – 2017: A systematic review and meta-analysis”. Scientific Reports 18 (2018): 1-10.
    17. Lin M., et al. “Prevalence of malocclusion in Chinese schoolchildren from 1991 to 2018: A systematic review and meta-analysis”. International Journal of Paediatric Dentistry2 (2020): 144-155.
    18. Homan BT and GN Davies. “An oral health survey of Aborigines and Torres Strait Islanders in far north Queensland”. Australian Dental Journal 18 (1973): 75-87.
    19. Sandeep G and G Sonia. “Pattern of dental malocclusion in orthodontic patients in Rwanda: A retrospective hospital based study”. Rwanda Medical Journal 69 (2012): 13-18.
    20. Redzepagic VL., et al. “An Epidemiological study of malocclusion and occlusal traits related to different stages of dental development”. Southern European Journal Dental Research 4 (2017): 9-13.
    21. Eslamipour F., et al. “Prevalence of malocclusion in permanent dentition of Iranian population: A review article”. Iranian Journal of Public Health2 (2018): 178-187.
    22. Siddegowa R and R Satish. “The prevalence of malocclusion and its gender distribution among Indian school children – An epidemiological survey”. Journal of Dental Research 5 (2014): 224–229.
    23. Kibria R., et al. “Prevalence of malocclusions in the north-east China attending the department orthodontic second affiliated dental hospital of Jiamusi university”. Journal of Applied Dental and Medical Sciences 4 (2016): 2-6.
    24. Onyeaso CO., et al. “The pattern of maloccusion among orthodontic patients seen in dental centre, university college hospital, Ibadan, Nigeria”. African Journal of Medical Science3 (2003): 207-211.
    25. Drummond RJ. “Orthodontic status and treatment need of 12-year-old children in South Africa: An epidemiological study using the dental aesthetic index. [Dissertation]”. University of Pretoria (2003).
    26. Bataringaya A. “A Survey of the occlusal traits in adolescent population in Uganda”. UWC THESIS (2004).
    27. Gábris K., et al. “Prevalence of malocclusions in Hungarian adolescents”. European Journal of Orthodontics 28 (2006): 467-470.
    28. Borzabadi-Farahani A., et al. “Malocclusion and occlusal traits in urban Iranian population. An epidemiological study of 11-14 year old children”. European Journal of Orthodontics 5 (2009): 477-484.
    29. Ashley FP., et al. “The relationship between irregularity of the incisor teeth, plaque and gingivitis: A study in a group of schoolchildren aged 11-14 years”. European Journal of Orthodontics 5 (1998): 233-240.
    30. Helm S and PE Petersen. “Causal Relation between malocclusion and periodontal health”. Acta Odontologica Scandinavica 47 (1989): 223-228.
    31. Geiger AM and BH Wasserman. “Relationship of occlusion and periodontal disease: Part IX-incisor inclination and periodontal status”. Angle Orthodontist 46 (1976): 99-110.
    32. Burden DJ. “An investigation of the association between overjet size, lip coverage, and traumatic injury to maxillary incisors”. European Journal of Orthodontics 17 (1995): 513-517.
    33. Otuyemi OD. “Traumatic anterior dental injuries related to incisor overjet and lip competence in 12-year-old Nigerian children”. International Journal of Paediatric Dentistry 4 (1994): 81-85.
    34. Thiruvenkatachari B., et al. “Early orthodontic treatment for class II malocclusion reduces the chance of incisal trauma: Results of a cochrane systematic review”. American Journal of Orthodontics and Dentofacial Orthopaedics 148 (2015): 47-59.
    35. Isiekwe MC. “Malocclusion in Lagos, Nigeria”. Community Dentistry and Oral Epidemiology 11 (1983): 53-62.
    36. Kerosuo H., et al. “Occlusal characteristics among groups of Tanzanian and Finnish urban school-children”. Angle Orthodontist 61 (1991): 49-55.
    37. Otuyemi OD and RO Abidoye. “Malocclusion in 12-Year old suburban and rural Nigerian children”. Community Dental Health 10 (1993): 375-380.
    38. Horowitz HS. “A Study of occlusal relations in 10-12 year old caucasian and negro children – A summary report”. International Dental Journal 20 (1970): 593-605.
    39. Cons NC., et al. “Distribution of occlusal traits in a sample of 1337 children aged 15-18 residing in upstate New York”. Dental Journal 28 (1978): 154-164.
    40. Künzel W and K Blüthner. “Experience gathered with the FDI method for measuring occlusal traits in 1572 children aged 15 residing in two cities in the GDR”. Journal of the International Dentistry Child 12 (1981): 43-49.
    41. Ferguson M. “The prevalence of occlusal traits in a Western Cape population”. Thesis, University of the Western Cape (1988).
    42. Kaka J. “The prevalence of occlusal traits in a selected Western Cape population”. Thesis, University of the Western Cape (1993).
    43. Brunelle JA., et al. Journal of Dental Research (Special Issue) 75 (1996): 706-713.
    44. Ng’ang’a PM., et al. “The prevalence of maloccusion in 13 to 15 year old children in Nairobi, Kenya”. Acta Odontologica Scandinavia 54 (1996): 126-130.
    45. Poeung P., et al. “The Prevalence of malocclusion, dental irregularities and orthodontic treatment need in 13-15 year olds In Teuk Klaing, Cambodia, Australia”. International Journal of Oral Health 5 (2011): 19-28.
    46. Thilander B., et al. “Prevalence of malocclusion and orthodontic treatment need in children and adolescents in Bogota, Colombia. An epidemiological study related to different stages of dental development”. European Journal of Orthodontics 23 (2001): 153-167.
    47. Bittencourt MAV and AW Machado. “An overview of the prevalence of malocclusion in 6 to 10 year old children in Brazil”. Dental Press Journal of Orthodontics 6 (2010): 113-122.
    48. Albarakari S and S Sahartaher. “Malocclusion traits in Saudi females seeking orthodontic treatment”. Pakistan Oral and Dental Journal 30 (2001): 1.
    49. Perillo L., et al. “Prevalence of orthodontic treatment need in southern Italian school children”. European Journal of Orthodontics 32 (2010): 49-53.
    50. Traebert E., et al. “Malocclusion in Brazilian schoolchildren: High prevalence and low impact”. Journal of Oral Health and Preventive Dentistry 16 (2018): 163-167.
    51. Gardiner JH. “An orthodontic survey of Lybian schoolchildren”. British Journal of Orthodontics 9 (1982): 59-61.
    52. Daniels C and S Richmond. “The development of the index of complexity, outcome and need (ICON)”. Journal of Orthodontics 27 (2000): 149-162.
    53. Kilpelainen PV., et al. “Anterior tooth position and motivation for early treatment”. Angle Orthodontist 63 (1993): 171-174.
    54. Gosney MB. “An investigation into some of the factors influencing the desire for orthodontic treatment”. British Journal of Orthodontics 13 (1986): 87-94.
    55. Helm S., et al. “Effect of Separate Malocclusion Traits on Concern for Dental Appearance”. Community Dentistry and Oral Epidemiology 14 (1986): 217-220.
    56. de Oliveira CM., et al. “Oral health related quality of life and the IOTN index as predictors of children’s perceived needs and acceptance for orthodontic treatment”. British Dental Journal 204 (2008): 1-5 discussion 384-385.
    57. Trulsson U., et al. “A qualitative study of teenagers’ decisions to undergo orthodontic treatment with fixed appliances”. Journal of Orthodontics 29 (2002): 197-204.
    58. Motloba DP., et al. “The psychological impact of malocclusion on patients seeking orthodontic treatment at a South African oral health training centre”. South African Dental Journal 71 (2002): 200-205.


Citation: Mandla Dominic Nyakale. “Analysis of Malocclusion and its Characteristics in the Referred Free State Orthodontic Patients". Acta Scientific Dental Sciences 5.2 (2021): 27-36.


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