Prevalence and Associated Factors of Maxillary Canine Transposition in Subjects Visiting a University Hospital Setup
Trishala A1, Ravindra Kumar Jain2*, Arthi B3
1 Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600077, Tamil Nadu, India.
2 Reader, Department of Orthodontics, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600077, Tamil Nadu, India.
3 Associate Professor, Department of Public Health Dentistry, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600077, Tamil Nadu, India.
*Corresponding Author
Ravindra Kumar Jain,
Reader, Department of Orthodontics, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600077, Tamil
Nadu, India.
Tel: +919884729660
E-mail: ravindrakumar@saveetha.com
Received: July 30, 2021; Accepted: August 10, 2021; Published: August 18, 2021
Citation:Trishala A, Ravindra Kumar Jain, Arthi B. Prevalence and Associated Factors of Maxillary Canine Transposition in Subjects Visiting a University Hospital Setup. Int J Dentistry Oral Sci. 2021;8(8):3925-3931. doi: dx.doi.org/10.19070/2377-8075-21000803
Copyright: Ravindra Kumar Jain©2021. 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
Tooth transposition is defined as a type of eruption anomaly where there is either an exchange of position between two adjacent teeth, or the development and eruption of a tooth in a position normally occupied by another non-adjacent tooth. The canine is one of the most commonly involved teeth in the transposition phenomenon. Early diagnosis of a developing transposition is extremely important and has a great influence on prognosis. The aim of this study was to assess the prevalence of maxillary canine transposition among patients visiting a private dental college. A retrospective study was conducted using the patient records from Saveetha Dental College, Chennai from June 2019 - April 2020. The study population included case records of patients who reported for orthodontic treatment. Records of 986 patients were screened for transposition of maxillary canines and it was found that only 6 patients had maxillary canine transposition. Data was collected and then subjected to statistical analysis. Microsoft Excel 2016 (Microsoft office 10) data spreadsheet was used to collect data and later exported to SPSS IBM (version 20.0). Descriptive statistics and chi square test were employed with a level of significance set at p<0.05. About 59.4% of the patients who reported for orthodontic treatment were adolescents between the age group of 15-20 years and 40.6% were adults between 20-45 years. 48.02% were male patients and 51.98% were females. The overall prevalence of maxillary canine transposition was 0.61%. The site of transposition was greater in lateral incisors (66.67%) followed by premolars (33.33%). There was a greater prevalence of maxillary canine transposition among adults, female population and patients with class I malocclusion, however it was not statistically significant (p>0.05)
2.Introduction
3.Conclusion
4.References
Keywords
Lateral Incisor; Maxillary Canine Transposition; Malocclusion; Premolar.
Introduction
Oral health is an integral part of general health [19]. Dentofacial
appearance has a lot to do with the way the people are perceived
in the society [14]. Adolescents with significant dentofacial inharmonies
are considered at risk for negative self-esteem and social
maladjustments [18, 55] . Malocclusion is regarded as an irregularity
of the teeth or a mal-relationship between the dental arches
beyond the normal range [46].
Severe malocclusion can be a social handicap [25]. Malocclusion
can cause different problems for the patient, such as psychosocial
problem related to impaired dentofacial esthetics, problems with
oral functions including difficulty in jaw movements, temporomandibular
joint disturbances, difficulty in mastication, swallowing
and speech, greater susceptibility to trauma and accentuated
periodontal disease [62, 23, 63].
The prevalence of malocclusion varies in different parts of the
world among various populations [16, 44, 22]. Knowledge about
the distribution of different malocclusions may help orthodontic
practitioners better understand the existent problem in a geographic
location and help them in the proper orientation and
management of treatment possibilities [32, 42, 17].
Transposition is a relatively rare dental anomaly, characterized by an interchange in the position of two adjacent permanent teeth
on the same side of the dental arch [35]. It is identified as complete
transposition when the crowns and the roots of the involved
teeth exchange places in the dental arch; and incomplete transposition
when the crowns are transposed but the roots remain in
their normal positions [26].
Tooth transposition generally occurs in the maxilla and is often
associated with other dental anomalies, such as agenesis, retained
primary canine and peg-shaped or small maxillary lateral incisors
[49]. Transpositions affect both sexes, but female patients have
been reported to outnumber male patients in the prevalence of
this anomaly [50]. The condition may occur both unilaterally or
bilaterally, but a greater incidence of unilateral cases has been
reported. Left side dominance has also been reported [12]. The
canine is one of the most commonly involved teeth in the transposition
phenomenon. Because of the high incidence of retained
deciduous canines associated with tooth transposition, some authors
report deciduous teeth as being the primary etiologic factor
of this anomaly. The intraosseous migration of the canine, trauma
to the deciduous tooth, and the presence of cysts and pathologies
have also been suggested [27]. The canine shows the highest incidence
of transposition with the first premolar, less often with the
lateral incisor, rarely with the central incisor and extremely rarely
with the second premolar or first molar [10].
Transpositions were classified according to Peck et al. [36] as
Maxillary canine-first premolar (Mx.C.P1)
Maxillary canine-lateral incisor (Mx.C.I2)
Maxillary canine to first molar site (Mx.C to M1)
Maxillary lateral incisor-central incisor (Mx.I2.I1)
Maxillary canine to central incisor site (Mx.C to I1)
Mandibular lateral incisor-canine (Mnd.I2.C)
Early diagnosis of a developing transposition is extremely important
and has a great influence on prognosis [58]. This may
usually be performed by a conventional panoramic radiographic
examination when the patient is between 6 and 8 years of age
[6]. When the alteration is detected early, interceptive procedures
including extraction of deciduous teeth and placement of eruption
guides for the permanent teeth may be performed, thus
preventing complete development of the anomaly. On the other
hand, when transposition is detected at a later stage, orthodontic
planning must address the indications for against extraction and
the sequence of correcting tooth positioning [66]. Previously our
team has a rich experience in working on various research projects
across multiple disciplines. (Muthukrishnan and Warnakulasuriya
2018 [30]); (Govindaraju, Neelakantan, and Gutmann 2017 [21]);
(Chen et al. 2019 [11]); (Priyanka et al. 2017[39]); (Sitharthan et al.
2019 [54]); (Priyadharsini et al. 2018 [61]); (Azeem and Sureshbabu
2018 [4]); (Wu et al. 2019 [65]); (Abitha and Santhanam 2019)
[1]; (Manohar and Abilasha 2019 [28]); (Venu, Dhana Raju, and
Subramani 2019 [59]); (Wang et al. 2019 [64]); (Girija, Jayaseelan,
and Arumugam 2018 [20]); (Sheriff, Ahmed Hilal Sheriff, and
Santhanam 2018 [53]); (Dhinesh et al. 2017 [13]). Now the growing
trend in this area motivated us to pursue this project.
The aim of this study was to assess the prevalence of maxillary
canine transposition in subjects visiting a university hospital setup.
Materials And Methods
Study design and setting:
This pilot retrospective study examined the case records of patients
who underwent treatment from June 2019 - April 2020 at
Saveetha dental college, Chennai. The study population included
case records of orthodontic patients, selected by non-probability
purposive sampling. Pediatric patients with primary dentition,
completely edentulous patients and denture wearers were excluded
from the study.
Ethical approval:
Ethical approval was obtained from the Institutional Ethics
Committee of the University (SDC/SIHEC/2020/DIASDATA/
0619-0320).
Data collection:
Records of 986 patients who reported for orthodontic treatment
were reviewed and analysed. Relevant data such as patient age,
sex, type of malocclusion, prevalence of maxillary canine transposition
and site of transposition were recorded. Repeated patient
records and incomplete records were excluded. Data was
verified by an external reviewer.
Statistical analysis:
Data was recorded in Microsoft Excel 2016 (Microsoft office 10)
and later exported to the Statistical Package for Social Science
(SPSS IBM version 20.0) and subjected to statistical analysis. Descriptive
statistics and chi square test were employed with a level
of significance set at p<0.05.
Results & Discussion
The data for this retrospective study was based on residents of
Chennai seeking treatment at a University hospital setup in Chennai.
This study aims to elucidate the importance of early diagnosis
of transposition and appropriate intervention to provide the best
aesthetic and functional outcome.
About 59.4% of the patients who reported for orthodontic treatment
were adolescents between the age group of 15-20 years and
40.6% were adults between 20-45 years [Figure 1].
48.02% were male patients and 51.98% were females [Figure 2].
The overall prevalence of maxillary canine transposition was
0.61% [Figure 3].
The site of transposition was greater in lateral incisors (66.67%)
followed by premolars (33.33%) [Figure 4].
There was no significant association between age and maxillary
canine transposition (p>0.05), but there was a higher prevalence
among adults (0.41%) when compared to adolescents (0.2%) [Figure
5, Table 1].
0.41% of females and 0.2% of males had maxillary canine transposition,
showing a female predilection. However there was no significant association (p>0.05) [Figure 6, Table 1].
There was a higher prevalence of maxillary canine transposition
among patients with class I malocclusion (0.41%), followed by
class II (0.2%) and there were no reported cases of maxillary canine
transposition in class III malocclusion. There was no significant
association between the type of malocclusion and the
prevalence of maxillary canine transposition (p>0.05) [Figure 7,
Table 1].
The overall prevalence of maxillary canine transposition in the
present study was 0.61%.
This was in accordance with previous literature which states that
the prevalence of tooth transposition varies considerably among
different populations from 0.09% to 1.4% [31]. Transposition
of the maxillary canine and first premolar presents a low prevalence
of 0.03% in the population of Swedish school children [57], 0.13% of Arabian dental patients [45], 0.25% of Scottish
orthodontic patients [48] and 0.51% of individuals in a composite
African sample [8]. In Japanese population, the reported prevalence
of tooth transposition is 0.065% in the general population
[3] and 0.660% in orthodontic patients [68]. Yilmaz et al found a
prevalence of 0.380% of tooth transposition in a Turkish population
[67] Buenviaje and Rapp reported a prevalence of transposed
teeth of 0.080% in a population of children aged 2–12 years [7].
It seems that prevalence of transposition differs significantly according
to race and region of sample selection.
In previous literature, it has been stated that the most common
type of transposition is between the canine and first maxillary
premolar, followed by transposition between the canine and the
lateral incisor, central incisor and second premolar [51].
Contrastingly, the site of transposition in this study has a preponderance
towards lateral incisor (66.67%), followed by premolar
(33.33%).
This was similar to a study by Abu-Hussein Muhamad et al, where
maxillary canine-lateral incisor transposition was found to have a
higher frequency than maxillary canine-first premolar transposition
in Israelian population [2].
The results of this study show a higher prevalence of maxillary
canine transposition among adults (0.41%), followed by adolescents
(0.2%) in the current population of patients undergoing
orthodontic treatment. However, there was no statistically significant
correlation between age and maxillary canine transposition
and no previous studies have been carried out to explain the same.
Maxillary canine transposition has a female predilection with a
prevalence of 0.41% out of 0.61% in this study but there is no
statistical significance. Most of the previous studies had equivalent
results in agreement with the findings of this study.In a study
by Shapira Y et al, females were found to have 60% more transposition
than males[52]. Another study by Plunket D.J et al, showed
that females had 63% of the total prevalence of maxillary canine
transposition [37]. The prevalence of tooth transposition did not
differ statistically between males (0.20%) and females (0.30%)
(P = .884) in a meta-analysis by Moschos A. Papadopoulos et al.
[33].
Patients with class I malocclusion had a higher prevalence of
maxillary canine transposition (0.41%), followed by patients with
class II malocclusion (0.2%) in the current study.
This was similar to a study by Kavadia-Tsatala S et al, where only
three of the total group of 16 subjects with tooth transpositions
(19%) exhibited Angle Class II division 1 malocclusion and the
rest(81%) Angle Class I [24].
In a study of the relationship between tooth transposition and
malocclusions, the frequency of prevalence was 0.5% for the
Class III patients, while the Class II division 1 patients exhibited
no transposition [5]. Our institution is passionate about high
quality evidence based research and has excelled in various fields
( (Jayaseelan Vijayashree Priyadharsini 2019 [60]; Pc, Marimuthu,
and Devadoss 2018 [34]; Ramesh et al. 2018 [41]; Ramadurai et al.
2019 [40]; Sridharan et al. 2019 [56]; Ezhilarasan, Apoorva, and
Ashok Vardhan 2019 [15]; Mathew et al. 2020 [29]; Samuel 2021
[47]; R et al. 2020 [43]; Chandrasekar et al. 2020 [9]; J. Vijayashree
Priyadharsini, Smiline Girija, and Paramasivam 2018 [38]). We
hope this study adds to this rich legacy.
Even though a few studies show contradictory findings, the overall
consensus was in agreement with the results of the present
study.
The results of this study have to be interpreted with the geographic
limitation of the study population and the sample size
selected. Hence it cannot be generalized to other populations of
geographic and cultural variation.
Figure 1: Bar graph representing the age distribution of patients included in this study. X axis represents the age of patients and Y axis represents the total percentage of patients included in this study. About 59.4% of the patients who reported for orthodontic treatment were adolescents between the age group of 15-20 years and 40.6% were adults between 20-45 years.
Figure 2: Bar graph representing the gender distribution. X axis represents the gender of patients and Y axis represents the total percentage of patients included in this study. 48.02% were male patients and 51.98% were females.
Figure 3: Bar graph depicting the overall prevalence of maxillary canine transposition. X axis represents the prevalence of maxillary canine transposition and Y axis represents the total percentage of patients included in this study. The overall prevalence of maxillary canine transposition was 0.61% (purple).
Figure 4: Bar graph representing the prevalence of maxillary canine transposition among lateral incisors and premolars. X axis represents the site of maxillary canine transposition and Y axis represents the total percentage of patients with maxillary canine transposition. The site of transposition was greater in lateral incisors - 66.67% (green) followed by premolars - 33.33% (orange).
Figure 5: Bar graph representing the association between age and the prevalence of maxillary canine transposition. X axis represents the age of the patients and Y axis represents the number of patients included in this study. About 0.2% of adolescents and 0.41% of adults had maxillary canine transposition. Chi square test was done and it was found to be statistically insignificant. Pearson Chi square value = 1.697; p-value = 0.193 (p>0.05, *statistically insignificant). The prevalence of maxillary canine transposition (purple) was higher among adults when compared to adolescents.
Figure 6: Bar graph representing the association between gender and the prevalence of maxillary canine transposition. X axis represents the gender of patients and Y axis represents the prevalence of maxillary canine transposition. About 0.2% of females and 0.41% of males had maxillary canine transposition. Chi square test was done and it was found to be statistically insignificant. Pearson Chi square value = 0.841; p-value = 0.359 (p>0.05, *statistically insignificant). Males had a higher prevalence of maxillary canine transposition (purple) when compared to females.
Figure 7: Bar graph representing the association between type of malocclusion and the prevalence of maxillary canine transposition. X axis represents the various types of malocclusion and Y axis represents the total number of patients included in this study. About 0.41% of patients with class I malocclusion and 0.2% of patients with class 2 malocclusion had maxillary canine transposition. Chi square test was done and it was found to be statistically insignificant. Pearson Chi square value = 0.262; p-value = 0.877 (p>0.05, *statistically insignificant). There was a higher prevalence of maxillary canine transposition (purple) among patients with class I malocclusion followed by patients with class II malocclusion and no reported cases in patients with class III malocclusions.
Table 1 represents the association between age, gender, type of malocclusion and prevalence of maxillary canine transposition. There was a higher prevalence of maxillary canine transposition among adults (0.41%), males(0.41%) and patients with class one malocclusion( 0.41%). However, Chi square test showed no significant association.
Conclusion
Within the limits of this study, the overall prevalence of maxillary
canine transposition in the South Indian population was 0.61%.
The most common site of transposition was lateral incisor followed
by premolar, with a higher prevalence among adults, female
population and patients with class 1 malocclusion. However, there
was no statistical significance between age, gender, type of malocclusion
and maxillary canine transposition.
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