共查询到20条相似文献，搜索用时 15 毫秒
1.
Andreas Naros Hannes Weise Felix Tilsen Sebastian Hoefert Georgios Naros Michael Krimmel Siegmar Reinert Joachim Polligkeit 《Journal of cranio-maxillo-facial surgery》2018,46(9):1645-1651
Purpose
The purpose of this study was to compare the three-dimensional accuracy of mandibular reconstruction following mandible continuity resection in patients treated with patient-specific, pre-bent reconstruction plates, using an ‘in-house’ 3D printer, with that in patients treated with conventional, intraoperatively bent plates.Patients and methods
We retrospectively analyzed 42 alloplastic mandibular reconstructions following continuity resection. 21 patients received patient-specific, pre-bent reconstruction plates using an in-house 3D printer. The control group consisted of 21 patients provided with intraoperatively bent reconstruction plates. Distances between corresponding anatomical landmarks on the mandibular angle and condyle (A–A′, BB′, CC′, BC′), as well as the intercondylar angle (ICA), were measured and compared on the pre- and postoperative CT scans.Results
Multivariate analysis of variance (MANOVA) showed significant multivariate main effect of group (F(5, 36) = 5.58, p = 0.001; Wilks lambda 0.564; partial η2 = 0.436), indicating more accurate postoperative results for the pre-bent group. Post-hoc comparison revealed significantly larger postoperative deviation in the distances between the mandibular angle and the intercondylar angle (ICA) for the intraoperatively bent group in comparison with the pre-bent group. However, there was no significant effect on the distance between the condyles.Conclusions
Mandibular reconstructions employing patient-specific, pre-bent reconstruction plates made using an in-house 3D printer show significantly better three-dimensional accuracy compared with intraoperatively bent plates. The described method prevents rotational error of the mandibular angle and improves restoration of the physiological intercondylar angle in mandible reconstruction after continuity resection. 相似文献2.
Sang-Ha Oh Hyeokjae Kwon Sun Je Kim Hyunwoo Kyung Young Joon Seo Dae Hyun Lew Seung Han Song 《Journal of cranio-maxillo-facial surgery》2018,46(6):1032-1036
Background
Skin texture and color are important considerations during the reconstruction of facial defects, and anatomical borders should be preserved. Therefore, a local flap is a better option. In these cases, the authors repaired facial defects using a bilateral interdigitated VY flap.Objective
We aim to present a modified bilateral Pacman flap technique for the reconstruction of round and oval facial defects.Materials and Methods
We performed a retrospective chart review of 25 patients (26 cases) who underwent bilateral interdigitated Pacman flap repair of round and oval facial defects after Mohs surgery for skin cancer from January 2012 to December 2017. The defect sizes ranged from 0.7 to 8.4 cm2 (mean 3.1 cm2).Results
All defects were covered successfully and the flaps survived in all cases. One patient had partial flap necrosis that resolved spontaneously. No flap contraction, distortion, or severe scar formation was observed in any patient during the 12-month follow-up period.Conclusion
The bilateral interdigitated Pacman flap can cover round and oval facial defects without distortion or central dog-ear deformity. This method is a useful option for facial restoration in selected cases. 相似文献3.
Bong Chul Kim Helios Bertin Hak-Jin Kim Sang-Hoon Kang Jacques Mercier Jean-Philippe Perrin Pierre Corre Sang-Hwy Lee 《Journal of cranio-maxillo-facial surgery》2018,46(11):1875-1882
Purpose
The goal of this study was to understand the three-dimensional (3D) structural characteristics of hemifacial microsomia (HFM) mandible in terms of skeletal units, especially to locate the underdeveloped skeletal regions for treatment. Another goal was to compare the HFM structure of different age groups to understand growth potential relevant to treatment scheduling.Materials and methods
We reconstructed 3D mandibles from computed tomographic images of French and Korean patients with HFM (N = 28; group II) and normal subjects (N = 27; group I). Each mandible was classified by Pruzansky's HFM types I, II and III, and by age group (child, adolescent, and adult). The mandible was divided into skeletal units, and geometrical representation by skeletal unit line was performed, including the condylar, body, coronoid, and angular units. Their length and angulations were measured and statistically analyzed.Results
The results showed that the affected condylar unit in type II HFM and the condylar/coronoid unit in type III were smaller in young age groups than were other units. The angulation between the skeletal units in type II, though not type III, tended toward normalcy with age, but not to the normal degree of angulations in group I.Conclusion
Our study shows the major involvement of condylar unit and minor involvement of body unit for HFM, improving with age in type II. The mandibular skeletal unit analysis seems to be a useful tool for individualized diagnosis, allowing identification of the major etiopathogenic area and treatment planning, including a simulation to set up a regimen for successful reconstruction of HFM. 相似文献4.
Johannes Buller Elisa Zirk Matthias Kreppel Andrea Grandoch Volker Maus Matthias Zirk Joachim E. Zöller 《Journal of cranio-maxillo-facial surgery》2018,46(8):1252-1257
Purpose
Although different proposals have been made to categorize isolated zygomatic arch fractures (ZAF), an investigation about fracture type and clinical outcome has not been published. In this study, we analyzed the geometric fracture morphology in isolated ZAF and provide a survey of reduction outcomes in accordance with 4 independent classifications.Materials and methods
Geometric measurements were performed in radiologic images of 94 patients with isolated ZAF, which were consecutively treated by closed reduction over transbuccal approach. Fracture types were allocated to the classifications of Rowe and Williams, Honig and Merten, Yamamoto et al., and Ozyazgan et al. The odds of achieving a satisfactory outcome were calculated for all categories.Results
Wide preoperative dislocation angles of more than 22° presented in M-type fractures (77.1%) more frequently compared to 2 fragments without the M-shape (33.3%) and one fragment (14.8%, p < 0.001). Favorable reduction outcome was significantly higher for M-shaped fractures than for differently configured fractures (83.3% vs. 30.4%, odds ratio 11.43, confidence interval 4.27–30.61). The rate of reduction in 100%–75% was most frequent for the Honig and Merten type I as well as Ozyazgan type IBV (both 85.4%, p < 0.001) and Yamamoto type II (84.2%, p < 0.001).Conclusion
The classifications of Honig and Merten, Yamamoto et al., and Ozyazgan were quite applicable, and subgroups showed significant increments in reduction outcome. Our analysis emphasizes that the differentiation of two clinical relevant groups, M-shaped and variable arch fractures, is feasible to manage and efficient to determine the odds of reduction outcome. 相似文献5.
Peng Wang Yu Wang Zhen Zhang Xiang Li Bin Ye Jihua Li 《Journal of cranio-maxillo-facial surgery》2018,46(8):1268-1274
Purpose
Hemifacial microsomia (HFM) is a frequently encountered congenital malformation syndrome involving both hard and soft tissue. Various surgical methods have been described to correct the deformities of HFM in the literature. This study aims to evaluate the therapeutic efficacy for HFM with the assistance of virtual surgical planning (VSP) and 3-dimensionally printed surgical templates.Materials and methods
From January 2010 to January 2016, a total of 46 patients were referred to the study. Different surgical procedures under the guidance of VSP and 3-dimensionally printed surgical templates combined with orthodontic treatment were used to correct the deformities. Clinical outcomes were evaluated by comparing the differences of affected-side ramus height, occlusal cant degrees and chin point deviation between the preoperative VSP and postoperative surgical results.Results
Satisfactory facial contour and occlusion were achieved with the combination of orthognathic and orthodontic treatment. Postoperative examination results showed that VSP was accurately transferred into actual surgery. The difference between the preoperative design and the postoperative outcome was not statistically significant.Conclusion
VSP and 3-dimensionally printed surgical templates serve as a reliable method and show great value in improving the accuracy and efficacy of surgical treatment of HFM. 相似文献6.
Diana Cassi Giuditta Battistoni Marisabel Magnifico Chiara Di Blasio Giuseppe Pedrazzi Alberto Di Blasio 《Journal of cranio-maxillo-facial surgery》2019,47(1):179-184
Purpose
To quantify the surface facial asymmetry in a group of young patients with hemifacial microsomia (HFM) and to investigate differences with a homogeneous sample of healthy subjects, using a novel stereophotogrammetric method.Materials and methods
Twelve patients (mean age 13.1 ± 3.1 years) with different degrees of HFM and 15 healthy controls (mean age 12.2 ± 3.5 years) were imaged with a stereophotogrammetric facial scanner. The root mean square error (RMSE) of the distances between the corresponding points of each original photograph and its mirror copy was calculated for the whole face and for each trigeminal third, as defined by the innervation of trigeminal branches. A statistical analysis was performed to compare the RMSE value of all facial areas within each group and between patients and controls.Results
RMSE values progressively increased from the upper to the lower third of face, both in patients and controls. The level of asymmetry was significantly higher in HFM subjects for middle third (p < 0.01), lower third (p < 0.001) and whole face (p < 0.001); no statistically significant differences were found between the groups for the upper third.Conclusions
The reported technique provides an accurate topographic analysis of the facial asymmetry, and is recommended for conditions such as HFM affecting only part of the face. 相似文献7.
Britta D.P.J. Maas Britt I. Pluijmers Paul G.M. Knoops Clifford Ruff Maarten J. Koudstaal David Dunaway 《Journal of cranio-maxillo-facial surgery》2018,46(12):2032-2041
Purpose
Craniofacial microsomia (CFM) is the result of a disturbance in embryologic development and is characterised by an asymmetric, mostly unilateral facial underdevelopment. The aim of this study is to understand the midfacial involvement in CFM using principal component analysis (PCA).Materials and methods
Pre-operative data from 19 CFM and 23 control patients were collected. A set of 71 landmarks was placed on three-dimensional (3D) reconstructions of all skulls to compare both populations. PCA visualised variation within both groups and calculated the vector of change. Linear measurements were taken to compare ratios between the populations and between the affected and unaffected sides in CFM patients.Results
PCA defined a vector that described shape changes between both populations. Videos showed the variation within the control and CFM group and the transformation from a mean CFM skull into a normal phenotype. Linear measurements showed a significant difference between the affected and unaffected sides in CFM patients.Conclusion
PCA has not been applied on asymmetrical data before, but it has proved to be a useful method to describe CFM. The virtual normalisation of a mean CFM skull enables visualisation of the bony shape changes, which is promising to delineate and to plan surgical correction and could be used as an outcome measure. 相似文献8.
Statement of problem
Lack of an accepted definition for the ascending ramus of the mandible means no common reference point is available for clinical or research dialogue.Purpose
The purpose of this review was to determine whether the ascending ramus has been defined, by using a search of published studies.Material and methods
PubMed was searched, using terms “ascending ramus” and “mandible.”Results
The search found no acceptable definition of the ascending ramus of the mandible.Conclusions
An acceptable definition for the ascending ramus of the mandible is lacking, and one is proposed here. 相似文献9.
Filippo Giovannetti Federico Mussa Paolo Priore Mirko Scagnet Elena Arcovio Valentino Valentini Lorenzo Genitori 《Journal of cranio-maxillo-facial surgery》2018,46(12):2017-2021
Object
At present, a minimally invasive endoscopic endonasal approach is considered an efficient option for lesions affecting the anterior and middle skull base with sellar and parasellar region involvement. In this study we will retrospectively analyze the pediatric patients that we have been treating in the same medical center for the past four years, using an endoscopic approach in the skull base.Methods
We performed a retrospective chart and imaging review of pediatric patients who underwent endoscopic endonasal skull base surgery (ESBS) at the Meyer Children's Hospital, (Azienda Ospedaliero Universitaria Meyer), in Florence, from January 2012 to July 2016.Results
Mean age was 12,5 years; 28 (65%) of the 44 patients were females. Skull base lesions were broadly classified as either bony abnormalities (4 cases) or skull base tumors (40 cases). The postoperative clinical follow-up duration ranged from 2 to 36 months. The two more frequently occurring diseases in our study were: craniopharyngioma and pituitary adenoma.Conclusions
After reviewing the international literature about pediatric endoscopic endonasal approach to skull base, we can affirm that our study is the world's second broadest work for number of records. While compiling this report, we have examined the first 40 consecutive pediatric patients to undergo ESBS at our institute. The appearance of postoperative complications is consistent with other international studies, confirming ESBS being feasible and safe even in the pediatric population.Level of evidence
4. 相似文献10.
Klaus W.W. Dörhage Jörg Wiltfang Vera von Grabe Annalena Sonntag Stephan T. Becker Benedicta E. Beck-Broichsitter 《Journal of cranio-maxillo-facial surgery》2018,46(6):953-957
Purpose
The positional non-synostotic plagiocephaly represents a cranial asymmetry affecting all 3 dimensions. The aim of this study was to evaluate volumetric indices to assess the efficiency in improving non-synostotic cranial asymmetries in treatment with head orthoses.Material and methods
A total of 96 infants were included in this observational retrospective study. The cohort was further divided into subgroups according to age of helmet supply (younger/older than 7.5 months) and duration of therapy (less/more than 150 days). With 3-dimensional photogrammetry data sets, the skull volume was separated into quadrants and set in relation to each other to create an Anterior Cranial Asymmetry Index (ACAI) and a Posterior Cranial Asymmetry Index (PCAI) as 3-dimensional parameters.Results
Treatment with head orthoses led to a significant reduction of ACAI (p < 0.0001) and PCAI (p = 0.001). Cranial asymmetry was more severe in the occipital region and significantly improved mainly during the first 75 days with a 40.08% decrease of PCAI value in the short-term therapy in the younger treatment subgroup (p = 0.003).Conclusions
The introduced parameters sufficiently reproduce the improvement of asymmetry during helmet therapy, following the trend of already established parameters. Asymmetry was significantly improved in the occiput region, and helmet therapy was highly effective in younger infants and in the early treatment period. 相似文献11.
Abdulaziz AlHelal Hamad S. AlRumaih Mathew T. Kattadiyil Nadim Z. Baba Charles J. Goodacre 《The Journal of prosthetic dentistry》2017,117(2):233-238
Statement of problem
Clinical studies comparing the retention values of milled denture bases with those of conventionally processed denture bases are lacking.Purpose
The purpose of this clinical study was to compare the retention values of conventional heat-polymerized denture bases with those of digitally milled maxillary denture bases.Material and methods
Twenty individuals with completely edentulous maxillary arches participated in this study. Definitive polyvinyl siloxane impressions were scanned (iSeries; Dental Wings), and the standard tessellation language files were sent to Global Dental Science for the fabrication of a computer-aided design and computer-aided manufacturing (CAD-CAM) milled denture base (group MB) (AvaDent). The impression was then poured to obtain a definitive cast that was used to fabricate a heat-polymerized acrylic resin denture base resin (group HB). A custom-designed testing device was used to measure denture retention (N). Each denture base was subjected to a vertical pulling force by using an advanced digital force gauge 3 times at 10-minute intervals. The average retention of the 2 fabrication methods was compared using repeated ANOVA (α=.05).Results
Significantly increased retention was observed for the milled denture bases compared with that of the conventional heat-polymerized denture bases (P<.001).Conclusions
The retention offered by milled complete denture bases from prepolymerized poly(methyl methacrylate) resin was significantly higher than that offered by conventional heat- polymerized denture bases. 相似文献12.
Jonathan C. Simmonds Anju K. Patel Nicholas S. Mader Andrew R. Scott 《Journal of cranio-maxillo-facial surgery》2018,46(3):498-503
Objectives
To examine the frequency of partial glossectomy performed for the indication of macroglossia in children within the United States, assessing for differences in rates of intervention across various demographics.To identify potential morbidities associated with partial glossectomy in this population and determine how such factors may influence length of stay and cost of admission following tongue reduction surgery.Study Design
Retrospective cross-sectional study.Setting
The Kids' Inpatient Database 2003, 2006, 2009, and 2012.Subjects
Patients under age 5 diagnosed with macroglossia who underwent partial glossectomy.Methods
Demographics were analyzed and cross tabulations, linear regression modeling, and multivariate analysis were performed.Results
During the four-years studied, partial glossectomy was performed in 196 children under age 5 with macroglossia. A disproportionately higher rate of intervention was seen in white children (p = 0.001), patients undergoing surgery in the mid-west (p < 0.001) and patients in the highest socioeconomic quartile (p = 0.015). Most patients underwent glossectomy in their second year of life. The average length of stay in patients who underwent partial glossectomy for macroglossia was 9.59 days (Range 1–211 days, median 3.45 days) and the average cost was $56,602 (median $16,330).Conclusion
Partial glossectomy for macroglossia is typically performed prior to age 2 in the United States. A higher rate of intervention is seen in white children, those who have surgery in the mid-west and affluent children even when controlling for confounding variables.Level of evidence
III. 相似文献13.
Konstantinos Natsis Maria Piagkou Nikolaos Lazaridis Trifon Totlis Nikolaos Anastasopoulos Jannis Constantinidis 《Journal of cranio-maxillo-facial surgery》2018,46(4):635-644
Purpose
The current study investigated the incidence, morphology and morphometry of the ossified ligaments expanding between petrous bone and posterior clinoid processes and in between the anterior, middle and posterior clinoid processes. Side symmetry, gender dimorphism and age influence were also studied.Materials and Methods
A total of 123 adult Greek dry skulls were observed.Results
A caroticoclinoid bar (CCB) was found in 60.2%. Partial CCBs appeared more commonly (36.6%) than complete (23.6%). The caroticoclinoid foramen (CCF) was symmetrical on both sides and genders. An anterior interclinoid, a posterior petroclinoid and a partial posterior interclinoid bar appeared in 19.5%, 6.5% and 2.4%, respectively. Osseous spurs posterolateral to the posterior clinoid process were present in 5.7%.Conclusion
The study highlights important morphometric details about osseous bars of the sella region and the related CCF in Greek skulls. Notable differences in the incidence of these bars in Greek individuals compared with findings from other populations highlight the growing awareness of ethnic differences in skull base landmarks. Variations and surgically oriented measurements provided by this study may benefit clinicians involved in the treatment of the middle cranial fossa pathology, enriching understanding of the complicated regional anatomy. Preoperative sellar area mapping is essential, by using computed tomography images, since modification of the surgical approach may be required in cases of severe ossification. 相似文献14.
Daniel Kruber Thomas Hierl Hans-Martin Doerfler Heike Huempfner-Hierl Matthias Krause 《Journal of cranio-maxillo-facial surgery》2018,46(7):1159-1161
Introduction
Polydioxanone (PDS) sheets are commonly used in the treatment of orbital wall fractures. A potential drawback of PDS is that it may be difficult to adapt to the anatomy of the orbital walls. Therefore a study was conceived to test the feasibility of preforming PDS sheets.Material and methods
PDS sheet material was water-heated and preformed using a template based on a statistical anatomical model. Then the deformed sheet was cooled, stored and compared to the original model to investigate post-deformation changes.Results
PDS sheet material could easily be deformed using a mould. No significant post-cooling shape changes were noticed.Conclusions
PDS sheet material can be preformed into complex geometric shapes. This could be a benefit in the treatment of orbital wall fractures. 相似文献15.
Raymond A. Kuthy Susan C. McKernan Mark Pooley M. Bridget Zimmerman 《Journal of the American Dental Association (1939)》2018,149(4):308-316
Background
In this study, the authors used observational data from 2014 to evaluate the association between the number of general dentists and several community characteristics.Methods
The authors collected community-level characteristics from secondary sources for all 947 Iowa incorporated communities to study their relationships with the mean number of general dentists per 1,000 population per square mile (population density), the dependent variable. The authors used zero-inflated negative binomial models to examine the association between the dependent and predictor variables.Results
Only 22.8% of communities had a dentist. Urban, young, well-educated, fluoridated communities with at least 1 elementary school had the highest estimated mean concentration of dentists. Isolated communities with older, less educated adults and lacking fluoridation and an elementary school had the fewest dentists.Conclusions
Although population is an important determinant for where a dentist practices, other variables such as urbanization, demographic characteristics, fluoridation status, and presence of at least 1 elementary school are also predictors of the number of dentists in a community.Practical Implications
These findings provide dental students and young practitioners useful information by highlighting community characteristics that are associated with office locations. 相似文献16.
Lara S. van de Lande Britt I. Pluijmers Cornelia J.J.M. Caron Eppo B. Wolvius David J. Dunaway Maarten J. Koudstaal Bonnie L. Padwa 《Journal of cranio-maxillo-facial surgery》2018,46(9):1427-1435
Introduction
Mandibular reconstruction in craniofacial microsomia (CFM) has been described and reviewed at length although final results are not always (aesthetically) satisfactory due to maxillo-mandibular asymmetry, for which optimal correction techniques remain unclear. The aim of this systematic review is to provide an overview of the surgical options for maxillary correction in patients with unilateral CFM.Material and methods
MEDLINE/Pubmed, Embase, Cochrane and Web of Science databases were searched up to April 15, 2017. Inclusion criteria were: studies reporting patients with unilateral CFM (n > 4) who had maxillary correction (with/without simultaneous mandibular correction) with a minimal follow-up of 6 months. The outcome measures included type of treatment (including preceding facial procedures), type and severity of mandibular deformity (by Pruzansky-Kaban system: Types I/IIa/IIb/III), asymmetry analysis method, outcome (i.e. occlusion, canting, stability, esthetic result, facial symmetry), complications and additional treatment needed.Results
Nine studies met the inclusion criteria. Analysis showed that Le Fort I + mandibular distraction osteogenesis (LeFort + MDO) and BiMaxillary osteotomy (BiMax) were used for treatment, as single or multiple-stage procedures. All studies reported aesthetic and functional improvement.Conclusion
Types I/IIa benefited from LeFort + MDO; Type IIb from LeFort + MDO or BiMax; and Type III from BiMax (with 50% of cases having preceding mandibular procedures, including patient-fitted prosthesis) at a mean age of 20.2 years. Four studies recommended additional (esthetic) procedures. 相似文献17.
Dan Feng Haihuan Gong Jiahui Zhang Xiaowei Guo Min Yan Song Zhu 《The Journal of prosthetic dentistry》2017,117(1):171-177
Statement of problem
Denture base resin may be exposed to different conditions for long periods, resulting in the loss of monomer by exudation and a decrease in mechanical properties.Purpose
The purpose of this in vitro study was to evaluate monomer loss by exudation from denture base resins doped with antibacterial coatings and their mechanical properties after long-term water immersion.Material and methods
Four kinds of dental base resin materials were used as experimental materials. The specimens of each resin were divided into an experimental group (coated) and a control group (uncoated). Monomer exudation was tested at 7 and 28 days by gas chromatography after materials were immersed in distilled water or a solution of 75% alcohol/distilled water. Flexural strength and elastic modulus were tested with a universal testing machine after immersion for 2 and 180 days. The surface morphology was characterized with atomic force microscopy. The data were analyzed using 3-way ANOVA followed by the Tukey-Kramer honest significant difference test (α=.05).Results
In both of the immersion media, each of the 3 factors (materials, coating, and immersion time) significantly affected the monomer exudation (P<.05). In addition, the interaction between any 2 of those factors or among the 3 factors had a significant interaction effect on the monomer exudation of the denture base (P<.05). The mechanical properties of the tested materials were different, and the immersion time had a significant effect on the flexural properties (P<.05). For flexural strength, a significant interaction effect occurred among the 3 factors (material, coating, and immersion time) (P<.05). The coating has a significant effect on the elastic modulus of denture base resin (P<.05) and on the interaction between the material and immersion time (P<.05).Conclusions
The silver-loaded mesoporous silica antibacterial coating can effectively reduce monomer exudation and enhance the flexural properties of denture base resin after immersion. 相似文献18.
Bruno Ramos Chrcanovic Ricardo Santiago Gomez 《Journal of cranio-maxillo-facial surgery》2018,46(3):504-510
Purpose
To integrate the available data published on squamous odontogenic tumors (SOT) and squamous odontogenic tumor-like proliferations in odontogenic cysts (SOT-LPOC) into a comprehensive analysis of their clinical/radiologic features.Materials and methods
An electronic search was undertaken in January 2017. Eligibility criteria included publications having enough clinical/radiological/histological information to confirm a definite diagnosis.Results
A total of 74 publications reporting 110 SOTs (102 central, 8 peripheral) and 60 SOT-LPOC were included. Compared to SOT-LPOC, SOT showed lower mean age, no preference regarding maxilla or mandible localization, significant association with cortical bone perforation, multilocular radiographic appearance, and mobility of the tooth/teeth associated with the lesion. While 5 recurrent SOT were reported after enucleation, no recurrent SOT-LPOC was found.Conclusions
SOT shows a more aggressive biologic behavior than SOT-LPOC, which supports the hypothesis that the two lesions are distinct clinicopathological conditions. 相似文献19.
Philipp Meyer-Marcotty Felix Kunz Tilmann Schweitzer Barbara Wachter Hartmut Böhm Nina Waßmuth Christian Linz 《Journal of cranio-maxillo-facial surgery》2018,46(6):987-993
Purpose
In the first months of life, any deviation from a physiological growth pattern can cause skull deformity. As there has not been any longitudinal three-dimensional (3D) study investigating the physiological growth of the infant skull, the aim of the present study was to acquire such data.Materials and Methods
We performed 3D stereophotogrammetric scans of 40 infants without cranial asymmetry at four regular 2-month intervals from the 4th to the 10th month of age. Six growth-related parameters (circumference, length, width, height, cephalic index [CI; width-length ratio] and total head volume) were used to analyse skull growth longitudinally.Results
With exception of the CI, all parameters showed significant increases, with maximum percentage growth from the 4th to the 6th month. The CI initially remained unchanged until the 6th month, before showing a significant reduction that continued throughout the study period. Male infants had larger heads than female infants, but a similar width-length ratio at all measurement times.Conclusion
This prospective study is the first longitudinal 3D analysis to examine the physiological growth dynamics of infants' heads within the first months of life. Understanding patterns of skull growth in all three dimensions is important for gaining further insights into physiological and pathophysiological skull development. 相似文献20.
Natalie M. Plana João Malta Barbosa J. Rodrigo Diaz-Siso Lawrence E. Brecht Eduardo D. Rodriguez 《Journal of the American Dental Association (1939)》2018,149(2):90-99