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Mohammed Almalky N, Mohammad Elattar H. Prevalence Of Different Types Of Malocclusion Among School Children In Makkah Governorate of Saudi Arabia. Int J Dentistr y Oral Sci.
2018;5(6):645-648. 645
OPEN ACCESS http://scidoc.org/IJDOS.php
Prevalence Of Different Types Of Malocclusion Among School Children In Makkah Governorate of
Saudi Arabia
Research Article
Mohammed Almalky N1*, Mohammad Elattar H2
1 Internship Student in UQUDENT, Umm Al-Qura University, Saudi Arabia.
2 Assistant Professor of Orthodontics, Umm Al-Qura University, Saudi Arabia.
International Journal of Dentistry and Oral Science (IJDOS)
ISSN: 2377-8075
Introduction
Malocclusion is considered one of the most common dental
problems together with dental caries, gingival disease and den-
tal uorosis [12]. Malocclusion may cause unpleasant appearance,
impaired oral function, speech problems, temporomandibular dis-
orders, increased susceptibility to trauma and periodontal disease
[30]. Identifying occlusal status in particular population provides
important information on treatment needs and enables the gov-
ernment to draw the appropriate preventive and treatment pro-
grams [7].
Planning orthodontic treatment service requires baseline data on
the prevalence of different types of malocclusion.
Several studies that investigated the prevalence of malocclusion
in different population groups have been reported, for instance:-
(Foster and Menezes, 1976) [16].
(Massler and Fränkel 1951) [29], (Altemus, 1959) [6] (Al-Emran et
al., 1990) [4] (Kerosuo et al., 1991) [25] (Hill 1992) [23] (Lew et al.,
1993) [27] (Otuyemi and Abidoye, 1993) [35].
(Ng’ang’a et al., 1996) [32] (Harisson, R. L. and Davis, D. W. 1996)
[17] (Johannsdottir et al., 1997) [24] (Thilander et al., 2001) [38].
The results of these studies revealed wide variations between
those populations. The variations could be due to the differences
in sample size, ethnicity, subjects age, and registration methods
[2].
A previous study was done to investigate the prevalence of mal-
occlusion in Riyadh region, Saudi Arabia, it concluded that ''the
Occlusal Status among 12-16 Year-Old School Children in Ri-
yadh, Saudi Arabia revealed predominance of Class I molar and
canine. Normal overjet and overbite were frequent ndings. The
most prevalent malocclusion trait was crowding followed by spac-
ing [7]. But due to different of ethnic origin of the people in Ri-
yadh region and the Makkah governorate of Saudi Arabia we will
apply the same study on population from Makkah governorate.
Aim of the Study
The aim of this study was to provide a description of the occlusal
*Corresponding Author:
Nasser Mohammed Almalky,
Internship student in UQUDENT, Umm Al-Qura University, Saudi Arabia.
Tel: 00966540738666
Fax:12112
E-mail: drnasseralmalky@hotmail.com
Received: June 06, 2018
Accepted: June 25, 2018
Published: June 26, 2018
Citation: Mohammed Almalky N, Mohammad Elattar H. Prevalence Of Different Types Of Malocclusion Among School Children In Makkah Governorate of Saudi Arabia. Int
J Dentistry Oral Sci. 2018;5(6):645-648. doi: http://dx.doi.org/10.19070/2377-8075-18000127
Copyright: Mohammed Almalky N©2018. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted
use, distribution and reproduction in any medium, provided the original author and source are credited.
Abstract
The purpose of this study was to assess the status of occlusion among school children in Makkah governorate of Saudi
Arabia.
Materials and Methods: The sampling included 289 adolescents with age range 14-17 years. The sample was randomly se-
lected from schools in Makkah governorate to determine the status of their occlusion.
Design: Randomized cross-sectional study. The examiner assessed different type of malocclusion, crowding, diastema, cross-
bite, overjet and overbite. These occlusal parameters were examined by one examiner using a mouth mirror, small light source
and metallic ruler.
Conclusion: This study revealed predominance of Class I molar among Saudi School children in Makkah city. Normal overjet
and overbite were frequent ndings. The most prevalent malocclusion trait was crowding.
Mohammed Almalky N, Mohammad Elattar H. Prevalence Of Different Types Of Malocclusion Among School Children In Makkah Governorate of Saudi Arabia. Int J Dentistr y Oral Sci.
2018;5(6):645-648. 646
OPEN ACCESS http://scidoc.org/IJDOS.php
status of the permanent dentition among adolescents with an age
range between 14-17 years in Makkah governorate of Saudi Ara-
bia.
Materials and Methods
A cross sectional study was conducted at Makkah governorate,
Saudi Arabia.
3 schools were randomly selected from different areas of Mak-
kah governorate. A total of 289 aged 13-17 years were ran-
domly selected and examined. The ethical approval was given by
UQUDENT. All the students were informed about their rights to
participate in the study and consent forms were signed.
Inclusion Criteria
- No previous orthodontic treatment done.
- Secondary dentition present with no remaining deciduous teeth.
- All had their rst permanent molars.
- No previous extraction.
- No caries lesion that causes change in the tooth size or shape.
Clinical examination was carried out in the schools within the stu-
dents’ classrooms by one experienced examiners using a mouth
mirror, small light source and metallic ruler. The following param-
eters were recorded:
1. Angle classication system: was recorded as Class I when
the mesiobuccal cusp of the maxillary rst permanent molar oc-
cluded with the mesiobuccal groove of the mandibular rst per-
manent molar on both sides. A Class II or Class III molar relation
was recorded when the mesiobuccal cusp of the maxillary rst
permanent molar occluded at least one-half cusp width anterior
or posterior to the mesiobuccal groove of the mandibular rst
permanent molar on both sides, respectively.
2. Crowding: It was recorded when the total sum of slipped con-
tacts measured in the segment was at least 2 mm.
3. Overbite: The vertical overlap of incisors measured to the
nearest half millimeter vertically from the incisal edge of the max-
illary right central incisor to the incisal edge of the corresponding
mandibular right incisor.
Overjet: It was measured with millimeter ruler as the distance
from the most labial point of the incisal edge of the maxillary in-
cisors to the most labial surface of the corresponding mandibular
incisor.
4. Anterior cross bite: It was recorded when one or more of
the maxillary incisors occluded lingual to the mandibular incisors.
5. Posterior cross bite: It was recorded when the buccal cusp of
one or more of the maxillary posterior teeth occluded lingual to
the buccal cusps of the opposing mandibular teeth.
6. Diastema: It was recorded when the space more than 1 mm
between central incisors.
Method of Measurement
Variable Method of measurement
Sagittal occlusion Angle classication
Overjet increased if it’s more than 3 mm,
decreased if it’s less than 2 mm
Overbite increased if it’s more than 2 mm,
decreased if it’s less than 2 mm
Crowding overlapping of on tooth with respect to
other tooth
Diastema space more than 1 mm between central
incisors
Crossbite in one or more maxillary teeth are placed
palatal\lingual to the mandibular teeth
Result
Class 1 malocclusion had the highest frequency of 67.13%, class
II div-1 was 14.53%, class II div-2 was 10.7% , class III was 7.61%
(Table 1).
The normal overjet and overbite values were highest 57.4% ,
52.6% , respectively (Table 2).
Frequency of Crowding was observed in 63% , diastema was pre-
sent in 8.3%, anterior cross bite was 17% and posterior cross bite
was 21.4% (Table 3).
Discussion
In studies that were done on other populations, variations in the
prevalence values of normal occlusion and malocclusion were
evident. Some of the studies showed high percentage of normal
Table 1.
Angel classication N %
Class I 194 67.13%
Class II (d-1) 42 14.53%
Class II (d-2) 31 10.7%
Class III 22 7.61%
Total 289 100%
Table 2.
normal increase decrease Total
Over jet 166 (57.4%) 74 (25.6%) 49 (17%) 289 (100%)
Over bite 152 (52.6%) 61 (21.1%) 76 (26.3%) 289 (100%)
Mohammed Almalky N, Mohammad Elattar H. Prevalence Of Different Types Of Malocclusion Among School Children In Makkah Governorate of Saudi Arabia. Int J Dentistr y Oral Sci.
2018;5(6):645-648. 647
OPEN ACCESS http://scidoc.org/IJDOS.php
occlusion while others did not.
Although many studies have been published that describe the
prevalence and types of malocclusion. Some variabilities between
their ndings and our existed due to the varying methods and
indices used to assess and record occlusal relationships, age dif-
ferences of the study populations, examiner subjectivity, specic
objectives, and differing sample sizes. Subjects in our study were
randomly selected and were in the permanent dentition stage.
Our results showed that the most common type of molar relation
was Class I followed by Class II relation, and Class III malocclu-
sion. These results were in agreement with previous Saudi studies
that measured dental malocclusion in orthodontic patients [3, 5].
Our results were also in agreement with studies which were per-
formed in other countries that measured malocclusion in ortho-
dontic patients like Iraq, Nigeria and Turkey [15, 33, 37]. However,
it disagreed with the ndings of Gul-e-Erum and Fida (2008) [22]
who found that Pakistani orthodontic patients have a higher per-
centage of Class II malocclusion (70.5%). This might be due to
the ethnic difference between the population used in their study.
When our results were compared to studies conducted on non-
orthodontic population in other countries, we found that stud-
ies in USA, Israel, Libya, Sudan, Egypt, China, Lebanon, Nigeria,
Jordan, Iran, Brazil and Tanzania reported that the most common
type of dental malocclusion was Class I, followed by Class II then
Class III and that was similar to our results ([1, 2, 8, 10, 11, 13,
14, 18, 19, 21, 27, 28, 30, 34, 36] Silva & Kang, 2001 ; Grando et
al., 2008).
On the other hand, a study by Gelgor et al., (2007) [20] that ex-
amined 2,329 teenagers in central Anatolia, Turkey, revealed that
the most common type of malocclusion was Class II division 1
(40%) [20].
Conclusion
This study revealed predominance of Class I molar among Sau-
di School children in Makkah governorate. Normal overjet and
overbite were frequent ndings. The most prevalent malocclusion
trait was crowding. This study provides descriptive information
for occlusion status that will be valuable in planning the appropri-
ate preventive and treatment programs in Makkah governorate.
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