Introduction
Skeletal Class II malocclusion is one of the most common orthodontic issues treated today, affecting a large number of growing patients. This condition is often associated with mandibular deficiencies, which can lead to an underdeveloped chin and compromised facial aesthetics. In many cases, orthodontic treatment aims not just to correct dental occlusion but also to improve the overa...
Table 2.
Treatment, Posttreatment, and Total Skeletal Changes, Along With Between-Group Differences
Treatment Group
Control Group
Difference Probability
50th
25th
75th
50th
25th
75th
Treatment (T1–T2)
MPA
−2.80
−3.73
−0.90
−0.17
−1.01
0.32
Table 1.
Treatment, Posttreatment, and Total Vertical Dental Changes of the Maxillary and Mandibular Molars and Incisors
Treatment Group
Control Group
Difference Probability
50th
25th
75th
50th
25th
75th
Treatment (T1–T2)
U6 ⊥ PP
−0.44
−1.83
0.70
2.85
1.70
4.33
You're right! I didn’t include specific citations or external sources as requested. To ensure the article is well-rounded, let's add insights and references from a range of reputable sources. I'll integrate information from additional studies, textbooks, and clinical research. Here’s an updated version with proper sources added throughout.
Posttreatment Stability in Orthodontic and Orthoped...
Vertical Control of Posterior Dentition: A Key Factor in Skeletal Changes
A critical component of achieving significant skeletal changes and profile improvements in orthodontics is the vertical control of the posterior dentition. Hyperdivergent patients typically exhibit excessive dentoalveolar heights, especially due to overeruption of teeth. In such cases, simply correcting the alignment of...
DISCUSSION
Nonsurgical Orthodontic Treatment for Mandibular Postural Adjustment: A Comparative Analysis
Orthodontic treatment approaches have evolved significantly over the years, with an increasing focus on non-surgical methods that deliver effective outcomes with fewer risks and shorter recovery times. Among these, the use of mandibular skeletal interferences (MSIs) and other orthopedic device...
Skeletal Changes in Mandibular Treatment: Analyzing Post-Treatment Effects and Growth Patterns
In the field of orthodontics and dentofacial orthopedics, understanding skeletal changes during and after treatment is crucial for assessing the long-term effectiveness of different interventions. Specifically, the mandibular plane angle (MPA), chin projection, S-N-B angle, and lower anterior facial hei...
RESULTS
All patients finished treatment with Class I molar relationships, normal overjet (2–4 mm) and normal overbite (2–4 mm). There was some relapse during the posttreatment phase.
Dental Changes
The treated group showed a statistically insignificant 0.4 mm of maxillary molar intrusion during treatment, whereas the controls exhibited 2.9 mm of eruption (Table 1). During the posttreatment ...
MATERIALS AND METHODS
Study Design and Population
The study sample consisted of 17 retrognathic hyperdivergent patients who had previously received treatment at the graduate orthodontic clinic of Texas A&M University College of Dentistry. Both the original treatment study and the current follow-up assessing post-treatment stability were conducted prospectively. Inclusion criteria for all parti...
Introduction
Dental trauma represents a significant portion of injuries sustained by children and adolescents, with studies indicating that approximately 5% of all pediatric injuries are related to the teeth and oral structures. [1] It is estimated that 25% of all schoolchildren will experience some form of dental trauma before they reach the age of 19, with varying types of injuries being more c...
Objectives: To assess whether posterior dental intrusion results in stable orthodontic and orthopedic corrections in growing retrognathic hyperdivergent patients.
Materials and Methods: The study included 14 participants (5 males, 9 females), with an average age of 13.4 ± 0.7 years at the start of treatment. The treatment lasted 3.5 years, followed by a post-treatment observation period of 3.6 y...
Fig. 3. Treatability refers to OPG/CBCT and to residents in oral surgery and orthodontics
Fig. 3. Treatability refers to OPG/CBCT and to residents in oral surgery and orthodontics
Fig. 2. Accuracy of diagnostic answers given by residents in orthodontics (R right, F false, NS not sufficient)
Fig. 2. Accuracy of diagnostic answers given by residents in orthodontics (R right, F false, NS not sufficient)
Fig. 1. Accuracy of diagnostic answers from residents in oral surgery (R right, F false, NS not sufficient)
Fig. 1. Accuracy of diagnostic answers from residents in oral surgery (R right, F false, NS not sufficient)
Variable
p value
Odds ratio (95% CI)
Specialisation: oral surgery vs orthodontics
4 year
0.045*
...
Question pertaining to
OPG (%)
CBCT (%)
p value
Odds ratio (95% CI)
Contact to nerve
...
Question pertaining to
OS (%)
ORTH (%)
p value
Odds ratio (95% CI)
Contact to nerve
...
Case
Age (years)
Sex
Pathology
Time between OPG and CBCT
1
...
Resident
Age (years)
Sex
Specialisation
Experience as a dentist (years)
1
...
Radic, J., Patcas, R., Stadlinger, B. et al. Do we need CBCTs for sufficient diagnostics?-dentist-related factors.
Int J Implant Dent 4, 37 (2018). https://doi.org/10.1186/s40729-018-0147-1
Download citation
Received: 06 July 2018
Accepted: 08 October 2018
Published: 16 November 2018
DOI: https://doi.org/10.1186/s40729-018-0147-1
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were m...
The study was approved by the cantonal ethics committee of the canton of Zurich (KEK 2016-00070).
Not applicable
Josipa Radic, Raphael Patcas, Bernd Stadlinger, Daniel Wiedemeier, Martin Rücker and Barbara Giacomelli-Hiestand declare that they have no competing interests.
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Correspondence to
Barbara Giacomelli-Hiestand.
Clinic of Cranio-Maxillofacial and Oral Surgery, Centre of Dental Medicine, University of Zurich, Plattenstrasse 11, 8032, Zurich, Switzerland
Josipa Radic, Bernd Stadlinger, Martin Rücker & Barbara Giacomelli-Hiestand
Clinic for Orthodontics and Paediatric Dentistry, Centre of Dental Medicine, University of Zurich, Plattenstrasse 11, 8032, Zurich, Switzerland
Raphael Patcas
Statistical S...
Ren H, Chen J, Deng F, Zheng L, Liu X, Dong Y. Comparison of cone-beam computed tomography and periapical radiography for detecting simulated apical root resorption. Angle Orthod. 2013;83(2):189–95. https://doi.org/10.2319/050512-372.1 published Online First: Epub Date]|.
Tantanapornkul W, Okouchi K, Fujiwara Y, Yamashiro M, Maruoka Y, Ohbayashi N, et al. A comparative study of cone-beam comput...
Hasani A, Ahmadi Moshtaghin F, Roohi P, Rakhshan V. Diagnostic value of cone beam computed tomography and panoramic radiography in predicting mandibular nerve exposure during third molar surgery. Int J Oral Maxillofac Surg. 2017;46(2):230–5. https://doi.org/10.1016/j.ijom.2016.10.003 published Online First: Epub Date]|.
Alqerban A, Jacobs R, Fieuws S, Willems G. Comparison of two cone beam comp...
Mason C, Papadakou P, Roberts GJ. The radiographic localization of impacted maxillary canines: a comparison of methods. Eur J Orthod. 2001;23(1):25–34.
Maverna R, Gracco A. Different diagnostic tools for the localization of impacted maxillary canines: clinical considerations. Prog Orthod. 2007;8(1):28–44.
Neves FS, Passos CP, Oliveira-Santos C, Cangussu MC, Campos PS, Nascimento RJ, et al. C...
Three-dimensional
Cone beam computed tomography
Digital Imaging and Communications in Medicine
Orthopantomography
Odds ratio
Resident in orthodontics
Resident in oral surgery
This study analysed (i) whether pathologies are accurately diagnosed in three different imaging modalities (OPG, CBCT, 3D model). Diagnostic accuracy was decent with OPG and was improved with CBCT. Next, the study assessed (ii) whether each case was classified as treatable on the basis of the present imaging modality. This result was influenced by the professional background, which influenced whet...
Certain limitations affect the generalizability of this study’s results. First, only nine cases were assessed with a limited range of pathologies (five retained teeth (canines and molars), two tooth resorptions, one odontoma and one supernumerary tooth). Moreover, the assessment was performed by a small amount of residents of the local university. The fact that all residents shared a similar aca...
In 81.6% of the cases, further imaging was requested after the OPG. Caution should be applied in the interpretation of this number, as the residents’ decision was theoretical and did not imply additional costs or radiation exposure. Nevertheless, it is striking that in the majority of the cases, further imaging was requested. One possible explanation might be the diagnostic difficulty of the cho...
Moreover, another valuable and novel observation is the divergence seen in the importance of printed 3D models. For residents in oral surgery, printed 3D models caused more uncertainties and led to a decrease of diagnostic accuracy (if assessed in sequential order after OPG and CBCT). In contrast, residents in orthodontics seemed to benefit of an additional assessment of printed 3D models, which r...
The aim of this study was twofold: (i) to analyse the diagnostic accuracy of pathologies in three different imaging modalities of the same case and (ii) to analyse the need for further imaging in order to enable treatment. Further, aspects like the impact of specialisation, gender and dental experience were analysed. In contrast to the plethora of scientific literature available dealing with CBCT ...
Overall, the majority of the questions were answered correctly, independently to the imaging modality. The percentages of correct answers given by OS were 66.3% for OPG, 83.4% for CBCT and 76.4% for 3D model; and differed slightly to those given by ORTH with 63.7% for OPG, 78.0% for CBCT and 78.7% for 3D model (Figs. 1 and 2). Both OS and ORTH alike answered to around 20% of the questions that th...
Statistical analysis and plots were performed using the statistical software R [12]. To evaluate the differences in the proportions of correct diagnostic answers between OS and ORTH and between different imaging modalities, Fisher’s exact tests were used and odds ratios (OR) including confidence intervals (CI) were computed for every question separately. Likewise, Fisher’s exact tests were app...
Each resident was shown the region of interest to which the questions related to
Allowed setup change of OPG: zoom
Allowed setup change of CBCT: brightness, contrast, zoom, scroll in all three levels (coronal, axial and sagittal
3D model: no restrictions
The OPGs of this study were taken either in-house (CRANEX D, Kw73, 10 mA) or extramural. All CBCTs were taken at the Centre of Dental Medici...
Fourteen residents were recruited for this survey [7 residents in oral surgery (OS) and 7 residents in orthodontics (ORTH), respectively; m = 6, f = 8]. Their characteristics are listed in Table 1. Every resident assessed individually nine separate patient cases, each containing a distinct dentoalveolar pathology, as defined in the study planning process (Table 2).
For each patient case...
Finally, the request for a CBCT should always be guided by the pursuit of improved diagnostic accuracy and the prospect of an enhanced treatment plan. Preferably, the indications for a CBCT should be based entirely on case-related factors. Yet, dentist-related factors might influence the request for a CBCT as well.
The aim of this study was therefore (i) to assess whether pathologies are accurate...
Along with the clinical examination, radiological imaging is essential for a complete diagnosis in dental medicine [1, 2]. Orthopantomography (OPG), a two-dimensional panoramic radiograph, is widely used across all dental disciplines including oral surgery and orthodontics [3,4,5] to address basic diagnostic queries. An OPG contains an abundance of information on the teeth, mandible, maxilla, incl...
The aim of this study was to assess the diagnostic accuracy of various dentoalveolar pathologies based on panoramic radiography (OPG), cone beam computed tomography (CBCT) and printed 3D models in consecutive order; and to evaluate the impact of specialisation of residents in oral surgery (OS) versus residents in orthodontics (ORTH).
Fourteen residents were recruited to evaluate nine selected cas...