Palatal volume and area assessment on digital casts generated from cone-beam computed tomography scans

Shahen, Shereef; Carrino, Gennaro; Carrino, Rossella; Abdelsalam, Reham; Flores‐Mir, Carlos; Perillo, Letizia

doi:10.2319/091117-611.1

Cited by 9 publications

(14 citation statements)

References 24 publications

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“…The first attempt to measure palatal volume was made by Heiser et al in 2004 where the volume was measured indirectly by weight correlation . The palatal volume assessment has been done on digital study cast using 3D software programs in mouth breathing subjects, obstructive sleep apnoea patients, skeletal Class III and crossbite subjects. Recently, only one study has been done on palatal volume assessment in UCLP (Table ).…”

Section: Discussionmentioning

confidence: 99%

Palatal volume estimation in operated unilateral and bilateral cleft lip and palate subjects using digital study models

Monga

Kharbanda

Balachandran

et al. 2020

Orthod Craniofacial Res

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Cleft lip and palate (CLP) is the most common birth defect affecting the face with an overall incidence of 1 out of 700 live births. The interdisciplinary treatment required in the treatment of cleft patients presents a challenge to healthcare professionals throughout the world. 1 The operated cleft lip and palate patients show a reduction in maxillary growth which is evident by midface retrusion 2 and anterior crossbite. 3 The growth inhibitory effects also extend to transverse

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Section: Discussionmentioning

confidence: 99%

Palatal volume estimation in operated unilateral and bilateral cleft lip and palate subjects using digital study models

Monga

Kharbanda

Balachandran

et al. 2020

Orthod Craniofacial Res

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“…With the introduction of 3D imaging tools such as dental cone-beam computed tomography (CBCT), most limitations in 2D imaging have been theoretically overcome [2]. Many research groups have been developing 3D analysis based on CBCT superimposition to analyze treatment and/or growth changes [3–7]. Currently, two main methods developed by two different research groups are used to superimpose CBCT images.…”

Section: Introductionmentioning

confidence: 99%

United Reference Method for three-dimensional treatment evaluation

et al. 2018

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BackgroundReproducible and descriptive Three-dimensional treatment evaluation can enhance future treatment based on realistic results. So, the purpose of this study was to describe a new method for three-dimensional treatment evaluation showing how to use fully-automated craniofacial superimposition of CBCT records combined with reference system to obtain descriptive and comparable results. This new method was named United Reference Method (URM).MethodsURM is a combination of automated 3D superimposition on anterior cranial base surface anatomy and measurements based on reference system. It was developed to show how to use fully-automated superimposition to obtain descriptive numerical comparable values. The method is based on: one main reference system for both superimposed CBCT records, semi-automation to increase accuracy, all measurements are projections and auxiliary references to aid in landmarks identification and measurements.The method steps can be described following a four-step approach: (1) Superimposition performed through a fully automated, voxel-wise, rigid registration considering only cranial base as a stable structure; (2) Identification of reference landmarks once on the superimposed records for corrected Frankfort Horizontal plane (C-FH) construction and a new semi-automated constructed Sella point to correct Orbital asymmetry; (3) Head orientation of superimposed CBCT images based on the C-FH; (4) Identification of landmarks affected by treatment with the aid of auxiliary reference planes. Evaluation of linear or angular changes derived by projection of same pre- and post-treatment landmarks on the C-FH. Pre- and post-expansion CBCT scans of 20 unilateral cleft lip and palate patients were used to calculate intra and inter-rater reliability. (X, Y and Z) coordinates, mean, standard deviation (SD) and Intra-class Correlation Coefficient (ICC) were calculated.ResultsThe proposed coordinates for C-FH construction showed ICC ≥ 0.998 and SD ranging from 0.064 to 0.242 mm. On the other hand, excluded coordinates due to expected natural craniofacial asymmetry had the lowest reliability ICC ≥0.742 and SD dramatically increased up to 1.112 mm.ConclusionURM showed adequate reliability so it can be used to produce three-dimensional descriptive data of craniofacial structural changes.

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“…In last years, some studies evaluated clinical reliability and validity of the 3D measurements of features such as the palatal volume, occlusal relation, arch height, overjet and overbite, which are difficult to measure accurately using a Vernier caliper and stone models in MSD or CBCT digital model [ 35 ]. A study of the validity of 3D measurements in ISD would also be helpful.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Reliability, Reproducibility and Validity of Digital Orthodontic Measurements Based on Various Digital Models among Young Patients

Park

Byun

et al. 2020

JCM

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The advantages of intraoral model scanning have yielded recent developments. However, few studies have explored the orthodontic clinical use of this technique particularly among young patients. This study aimed to evaluate the reliability, reproducibility and validity of the orthodontic measurements: tooth width, arch length and arch length discrepancy in each digital model obtained by model scanner and intraoral scanner, relative to a plaster model. Arch length measured using two methods: curved arch length (CAL) measured automatically by digital program and sum of sectional liner arch length (SLAL) measured sum of anterior and posterior liner arch lengths. Arch length discrepancy calculated each arch length measurement methods: curved arch length discrepancy (CALD) and sum of sectional liner arch length discrepancy (SLALD). Forty young patients were eligible for the study. A plaster model (P), model-scanned digital model (MSD) and intraoral scanned digital model (ISD) were acquired from each patient. The reliability of the measurements was evaluated using Pearson’s correlation coefficient, while the reproducibility was evaluated using the intraclass correlation coefficient. The validity was assessed by a paired t-test. All measurements measured in P, MSD and ISD exhibited good reliability and reproducibility. Most orthodontic measurements despite of CAL in MSD exhibited high validity. Only the SLAL and SLALD in ISD group differed significantly, despite the good validity of the tooth width, CAL and CALD. The measurements based on the digital program appeared high reliability, reproducibility and accurate than conventional measurement. However, SLAL and SLALD in ISD group appeared shorter because of distortion during intraoral scanning. However, this could be compensated by using digital programed curved arch. Although the validity of SLAL and SLALD in the ISD group differed statistically, the difference is not considered clinically significant. Although MSD and ISD are acceptable for a clinical space analysis, clinicians should be aware of digital model-induced errors.

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Palatal volume and area assessment on digital casts generated from cone-beam computed tomography scans

Cited by 9 publications

References 24 publications

Palatal volume estimation in operated unilateral and bilateral cleft lip and palate subjects using digital study models

Palatal volume estimation in operated unilateral and bilateral cleft lip and palate subjects using digital study models

United Reference Method for three-dimensional treatment evaluation

Evaluation of the Reliability, Reproducibility and Validity of Digital Orthodontic Measurements Based on Various Digital Models among Young Patients

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