Cone-beam computed tomography evaluation of Pont′s index predictability for Malay population in orthodontics

Abstract

Introduction:In orthodontic treatment, three-dimensional (3D) dental casts has a significant role in diagnosis and treatment planning. The aim of this study was to evaluate Pont's index predictability in orthodontics.Materials and Methods:Premolar arch width, molar arch width and mesiodistal width of the maxillary incisors were measured three-dimensionally to assess shape of dental arches. The data source was cone beam computed tomography (CBCT) high volumetric data acquisitions from Malay ethnic background. Arch widths were measured and recorded from 53 subjects (32 male and 21 female with the mean age, 25.81), both the maxillary and mandibular arches, to obtain CBCT high volumetric data. All measurements were obtained through CBCT Planmeca Romexis TM Software 2.3.1.R (Helsinki, Finland).Results:Pont's formula overestimated the upper and lower interpremolar distance, with mean differences of 8.35 ± 3 mm and 12.02 ± 3.20 mm, respectively. Furthermore, the formula overestimated the upper and lower intermolar distance, with mean differences of 7.87 ± 3 mm and 16.14 ± 5.86 mm, respectively.Conclusions:The results indicate that Pont's index is not practical for use with the Malaysian population since the index overestimated interpremolar and intermolar widths. This raises questions whether the index is a true predictor of arch width measurements.

3D CBCT human adult odontometrics: Comparative assessment in Saudi, Jordan and Egypt population

“…These 3D model findings deliver more precise and consistent tools for obtaining measurements in odontometric study (Alam et al, 2014b, Alam et al, 2015c, Tarazona et al, 2011). Furthermore, 3D CBCT data provides surplus benefits, such as availability of the images produced, lessening in storage expenses and the facility to evaluate the images by sophisticated software (Alam et al, 2014b, Alam et al, 2015c, Tarazona et al, 2011). CBCT technique of 3D digital acquirement can be used in innumerable dental divisions such as endodontic, orthodontics, prosthodontics and implantology.…”

“…Odontometric analysis (Haque and Alam, 2017, Purmal et al, 2013) using direct measurement methods including hand-held digital calipers (Alam et al, 2015a, Rahman et al, 2014, Hasan et al, 2015, Sajib and Alam, 2017, Alam et al, 2015b), graphical representation to record dimensions on dental casts (Khursheed et al, 2014), 2D digital model (Shahid et al, 2016, Shahid et al, 2017), Digital impression model (Noor et al, 2014, Jamayet et al, 2014, Sitthiphan et al, 2015), 3D CBCT model (Alam et al, 2014b, Alam et al, 2015c, Tarazona et al, 2011), laser scanned model (Massoud et al, 2016) have been used. Recent development in technology such as 3D CBCT has made it possible that the odontometric measurements in three-dimension (Alam et al, 2015c). These 3D model findings deliver more precise and consistent tools for obtaining measurements in odontometric study (Alam et al, 2014b, Alam et al, 2015c, Tarazona et al, 2011).…”

“…Recent development in technology such as 3D CBCT has made it possible that the odontometric measurements in three-dimension (Alam et al, 2015c). These 3D model findings deliver more precise and consistent tools for obtaining measurements in odontometric study (Alam et al, 2014b, Alam et al, 2015c, Tarazona et al, 2011). Furthermore, 3D CBCT data provides surplus benefits, such as availability of the images produced, lessening in storage expenses and the facility to evaluate the images by sophisticated software (Alam et al, 2014b, Alam et al, 2015c, Tarazona et al, 2011).…”

“…No clinical dissimilarities between measurements using the CBCT method and those by means of the Digital Method exists. (2D) (Alam et al, 2014b, Alam et al, 2015c, Tarazona et al, 2011). CBCT helps orthodontist, prosthodontist and other specialist in the dentistry field to utilize the digital diagnostic simulation models (DDS) by the scanning the dental cast or direct in vivo.…”

“…CBCT helps orthodontist, prosthodontist and other specialist in the dentistry field to utilize the digital diagnostic simulation models (DDS) by the scanning the dental cast or direct in vivo. CBCT delivers excellent and high resolution images in short time and with a minmum amount of radiation than conventional CT. CBCT also offers more specific and precise 3D data of the dentofacial structures than 2D radiographs (Alam et al, 2015c, Tarazona et al, 2011).…”