Cephalometric & Model Analysis and Treatment Simulation Software




CephSmile V2.0 is software for 2D cephalometric analysis and focusing on orthodontics treatment planning and applied to simulate changes on the facial profile after receiving treatment. CephSmile could be used to analyze craniofacial growth changes that lead to skeletal discrepancies and to study the cause of malocclusions.

CephSmile V2.0 is able to draw the cephalometric traces of lateral skull and face in both bones and soft surface sections using the landmarks defined by the dentists. Furthermore, this program calculates the sizes of angles and the distances to be used for cephalometric analysis.  CephSmile can perform automatic drawing of the significant traces of face, skull, and teeth by using the reference points. CephSmile program provides tools that allow users to mark the correct points with ease. It also enable uses to perform cephalometric analysis with different types of analysis, such as Mahidol Analysis, Down Analysis, Steiner Analysis, Tweed Analysis, Jaraback Analysis, Harvold Analysis, Rickette Analysis, and McNamara Analysis which are the significant data that show the structural problems on skulls, face, and teeth.
CephSmile V2.0 has main features as followings:

  • Cephalometric Lateral Analysis
  • Superimposition
  • Orthodontic Treatment Simulation
  • PA Analysis
  • 3D Skull from 2D Projections
  • 2D Digital Model Analysis & Planning


CephSmile V2.0 has been developed for analyzing the lateral cephalometric radiographs, postero-anterior cephalometric radiographs and a dental model photograph to facilitate the orthodontic treatment planning to be faster than before. The uniqueness of this program consistes of three key features to be described as follows:

1. Cephalometric Lateral Analysis including the following features:

  • Six national cephalometric analyses such as Mahidol, Chula, Chiang Mai, Songkla, Songkla Othognathic, and Khonkaen analysis along with nine international cephalometric analyses such as Down, Steiner, Tweed, Jarabak, Harvold, Ricketts, McNamara, ABO and Sassouni Analysis.
  • Local contrast enhancement function on radiographic images to facilitate the overlaying and landmarking process.
  • Zoom function on radiographic image with trace lines using interpolating technique to reduce the artifacts on the magnified images of trace lines and the X-ray image.
  • Deformable template fitting along with smooth function to allow trace lines to be in line the soft and hard tissue trace lines on radiographic images.
  • Color displays numeric results of Cephalometric analysis which can be changed if modifying the norms and/or standard deviations.  


2. Othodontic Treatment Simulation to visualize facial changes before executing actual orthodontic treatments (changes by readjusting only teeth) and orthognathic treatments (changes by readjusting teeth and jaws) including the following features:

  • Displacement ratio between hard and soft tissue derived from the statistic data from the area under the nose to the chin from 50 Thai patients who had received orthodontic treatments.
  • Thin plate spline technique to change the facial area by weighting and spline factors calculated from the paired positions of trace lines and paired landmarks before and after the landmark and traceline movement.  

3. Simulation of 3D skull from 2D projections from cephalometric trace lines and landmarks Lateral and PA X-Ray image according to the following processes:

  • Matching landmarks and trace lines from a lateral image with the corresponding landmarks and trace lines from a PA image.
  • Applying the matched landmark and trace lines with the 3D skull model before applying 3D Thin place spline to morph the 3D skull model verified by linear and angular measurements. 



CephSmile V2.0 program is able to perform curve fitting, and smoothing the trace lines by using a few landmarks before calculating the angles and distances according to trigonometric rules, and comparing the results with the standard cephalometric values for Thai people. CephSmile can perform cephalometric analysis with different types of analysis including Mahidol, Chula, Konkaen, Songkla, Chiangmai, Down, Steiner, Tweed, Jaraback, Harvold, Rickette, McNamara ABO, and Sassouni whose data from different types of cephalometric analyses indicate the structural problems on skulls, facial profiles, and and malocclusion on the teeth.    


CephSmile V2.0 is also able to record the results and display the recorded data for comparisons using Superimposition program to compare the results pre and post orthodontic operation. This function can show comparative changes on facial profile as well as dental structure during the orthodontic treatment periods, so that the patient can view changes as time has passed.


CephSmile V2.0 can determine and simulate dental and facial changes on a patient’s face after orthodontic treatment. With this simulation, the patients are allowed to see the post-treatment facial structure before the actual orthodontic treatment has been executed. Therefore, the patient who needs braces to correct the teeth’s positions would find the treatment more informative and useful.


CephSmile V2.0 can perform the frontal PA Cephalometric Analysis to make symmetry analyses and complete the cephalometric analysis process.  The PA Analysis of CephSmile also has a function to perform curve fittings smoothing the trace lines by using only few landmarks before calculating the distances according to trigonometric rules, and then compare the symmetrical analysis results relatively to different reference axes.


Since X-ray images can be obtained with ease from clinical procedure, so CephSmile V2.0 has presented the technique on 3D skull simulation based on 2D projections as a substitute for the expensive CT scan. CephSmile can perform the simulation of 3D skull by only applying an inexpensive X-Ray Images including lateral and PA views along with the corresponding cephalometric landmarks and line tracings.


CephSmile V2.0 can perform 2D Digital Model Analysis and Planning, including Bolton Analysis (the ratio between sum of the upper teeth widths and sum of the lower teeth widths), dental arch parameters along with dental segmentation before performing orthodontic simulation.  


    CephSmile V2 has been approved by Ethic Committee to be applied in the project

    “Study of the Accuracy and Reliability of CephSmile Program Version 2"

    at Faculty of Dentistry on 23 June 2009.

        CephSmile V2 Award :

        Thailand ICT Award (TICTA 2009) in e-Health Application for the topic “CephSmile V2.0” from Ministry of ICT, Thailand

        Innovation Award from National Research Council of Thailand (NRCT) of the year 2010 (Honorable prize)