Publications by authors named "Meyer-Marcotty P"

Background: Cranial measurements are crucial for evaluating preterm general development because they are a surrogate tool for evaluating brain growth. Usually, they are based on tape-measured head circumference; however, a three-dimensional (3D) approach expands the diagnostic spectrum to the evaluation of cranial volume and shape.

Aims: Very preterm (vPT) infants face multiple risks and obstacles in their early development.

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Article Synopsis
  • Mandibular movement is influenced by individual variations in the temporomandibular joint (TMJ), necessitating a patient-centered approach in dental treatment that accounts for unique anatomy and condylar function.
  • This study introduced an automatic tracking algorithm for monitoring mandibular movement using real-time magnetic resonance imaging (rt-MRI), finding it to be significantly faster and more accurate than traditional manual tracking techniques.
  • Results indicated that the new least mean square registration (LMS) method was 76% quicker and had better alignment accuracy, suggesting it could enhance the objective assessment of TMJ function in clinical settings.
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Objective: The aim of the present study was to objectively assess the degree of residual facial asymmetry after primary treatment of non-syndromic unilateral cleft lip and palate (UCLP) in children and to correlate it with subjective ratings of facial appearance.

Materials And Methods: Stereophotometry was used to record the faces of 89 children with UCLP for comparison of cleft and non-cleft sides up to 5 years after primary cleft closure. Root mean square values were calculated to measure the difference between the shape of cleft and non-cleft sides of the face and were compared to controls without a cleft lip.

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Objectives: Occupational hand eczema is a common inflammatory skin condition among healthcare professionals. Orthodontists are frequently exposed to a variety of irritating and allergenic substances, and therefore they belong to a predisposed group to develop hand eczema. However, current data on the prevalence and predisposing factors among orthodontists to provide adequate prophylaxis are lacking.

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  • The study aimed to evaluate the necessity of secondary palatal corrective surgery in a specific repair protocol for cleft palates, focusing on a phased approach to palate closure.
  • Data was analyzed from 195 patients treated at the University Goettingen between 2001 and 2021, looking at surgery types, complications like oronasal fistulae, and incidences of secondary surgeries.
  • Results indicated that only 1% of the patients required additional palatal surgeries, and about 19% of older patients needed skeletal corrective surgeries, suggesting the protocol was effective in minimizing complications.
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Background: Real-time magnetic resonance imaging (rtMRI) is essential for diagnosing and comprehending temporomandibular joint (TMJ) movements. Current methods for tracking and analysis require manual landmark placement on each acquisition frame. Therefore, our study aimed to assess the inter- and intra-rater reliability of placing cephalometric landmarks in frames from a dynamic real-time TMJ MRI.

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Background: Increased daytime sleepiness is a frequently reported symptom in patients with pronounced dysgnathia.

Objectives: This study investigated possible correlations using home peripheral arterial tonometry (PAT) and oropharyngeal airway volume determination in patients with dysgnathia and daytime sleepiness.

Methods: Twenty patients (13 male, median age 27.

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Objective: The objective of this clinical trial was to compare facial expressions (magnitude, shape change, time, and symmetry) before (T0) and after (T1) orthognathic surgery by implementing a novel method of four-dimensional (4D) motion capture analysis, known as videostereophotogrammetry, in orthodontics.

Methods: This prospective, single-centre, single-arm trial included a total of 26 adult patients (mean age 28.4 years; skeletal class II: n = 13, skeletal class III: n = 13) with indication for orthodontic-surgical treatment.

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Article Synopsis
  • - This study investigates how well orthodontists detect incidental findings in routine orthodontic radiographs, which may bear important medical implications beyond dental issues.
  • - 134 orthodontists evaluated two types of radiographs, revealing that only 39.1% of incidental findings were detected, with a stronger focus on dental compared to extradental areas.
  • - The research highlights that increasing professional experience correlates with better detection rates, emphasizing the need for thorough assessments of all radiographed areas in clinical practice.
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Purpose: We aimed to comprehensively analyse a possible correlation between skeletal malocclusions, gender and mandibular characteristics in all three dimensions in adults and to identify mandibular characteristics that are typical for extreme skeletal patterns.

Methods: A 3D model of the skull was calculated in 111 adult patients (mean age = 27.0 ± 10.

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The aim of this study was to assess the changes in occlusal patterns during combined surgical and orthodontic therapy in patients with vertical jaw malformations. Twenty-six orthognathic patients (18 female, eight male; median age 25 years, interquartile range 11.5 years) and 10 control patients (five female, five male; median age 29.

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Head development is a surrogate for brain development in infants and is related to neurocognitive outcome. There is only limited knowledge on early extra-uterine head shape and size assessment in very preterm infants. Here, 26 very preterm infants with a mean gestational age of 29.

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Objective: Due to increasing numbers of adult patients presenting to orthodontic practices, an increase in incidental findings on diagnostic X‑rays, which are the cornerstone of orthodontic diagnostics, is expected. This raises the clinically relevant question of whether an age effect exists regarding prevalence, localisation and severity of incidental findings on orthodontic diagnostic X‑rays.

Materials And Methods: The clinical, primarily retrospective study examined pathological incidental findings from 600 orthopantomograms (OPT) and lateral cephalogram (LC) images in two groups of orthodontic patients (group I: 150 children/adolescents, age 11.

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Purpose: Adolescence is a delicate phase during life in which self-stigmatization increases and acceptance by peers becomes more important. However, little is known about how adolescents with cleft lip and/or palate experience this stage of life. Therefore, the purpose of this study was to investigate how cleft lip and/or palate (CLP) adolescents are looked at by their peers and how they look at others with/without CLP.

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Objectives: Reduced occlusal function is a main characteristic of orthognathic patients. The present study aimed to investigate the extent of therapy-induced functional improvements in occlusal function using a digital diagnostic method.

Methods: This prospective clinical study included 41 orthognathic patients (24 women and 17 men, median age 27.

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The development of head shape and volume may reflect neurodevelopmental outcome and therefore is of paramount importance in neonatal care. Here, we compare head morphology in 25 very preterm infants with a birth weight of below 1500 g and / or a gestational age (GA) before 32 completed weeks to 25 term infants with a GA of 37-42 weeks at term equivalent age (TEA) and identify possible risk factors for non-synostotic head shape deformities. For three-dimensional head assessments, a portable stereophotogrammetric device was used.

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Article Synopsis
  • Virtual surgery planning (VSP) is thought to improve maxillary positioning accuracy compared to conventional surgery planning (CSP), but there are few studies comparing these methods.
  • This study compared the postoperative outcomes of splint-based maxillary positioning in 52 patients, using both VSP and CSP, by analyzing 3D alignment of their results.
  • Findings indicated that both planning methods led to similar inaccuracies in achieving desired maxillary positions, particularly in vertical impaction and midline correction, suggesting no significant advantage of VSP over CSP.
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Objectives: Adult orthodontic treatment, especially in patients over 40 years, is steadily increasing. One causal factor for the treatment need in this age group is periodontal breakdown. The aim of this study was to detect correlations between periodontal problems and orthodontic parameters in interdisciplinary patients.

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Objective: This study evaluated the gene expression and protein synthesis of sex hormone receptors in human periodontal ligament cells (PDLCs) in relation to donor- and tooth-specific factors with the aim to clarify the debate about sex hormone receptors in PDLCs.

Design: The expression patterns of estrogen receptors (genes: ESR1 and ESR2; proteins: ERα and ERβ), androgen receptor (AR) and progesterone receptor (PR) were investigated in the context of immortalization status, previous orthodontic tooth movement (OTM), donor age, sex and hormonal stimulation in PDLCs from 14 healthy donors (male: n = 8, female: n = 6; adolescents: n = 8, adults: n = 6) using quantitative real-time polymerase chain reaction, Western blot and immunocytochemistry.

Results: For ERβ, the full-length isoform ERβ1 and truncated variants were detected.

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Objectives: Sufficient dental decompensation is crucial for treatment success in combined orthodontic-surgical treatment. The study's objective was to determine the treatment success and efficiency in sagittal, vertical, and transversal decompensation.

Methods: This longitudinal, observational study enrolled 52 adult patients, who underwent orthodontic-surgical treatment.

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Background: The correlation between individuals' condylar morphology and their skeletal pattern is of great interest for treatment strategies ranging from orthodontic orthopaedics to orthognathic surgery. The objective of the present study was to investigate this relationship three-dimensionally.

Methods: A total of 111 adult patients (mean age = 27.

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Incorrect registration of the condylar position in orthognathic surgery is supposed to cause postoperative relapse, condylar resorption and temporomandibular disorders. The aim of this prospective study was to evaluate the influence of general anaesthesia on centric relation (CR). Therefore, CR registered preoperatively in the awake patient and CR registered intraoperatively under general anaesthesia were recorded in 30 patients (14 men, 16 women) undergoing orthognathic surgery (skeletal class I: n=3, II: n=13, III: n=14; symmetric: n=20; asymmetric: n=10).

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Background: Head shape and head volume of preterm infants give important information on short- and long-term development. Three-dimensional (3D) assessment of a preterm infant's head would therefore provide more information than currently used two-dimensional methods.

Aims: To evaluate a contactless 3D imaging system to assess head shape and volume in preterm infants.

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Background: Orthodontic treatment can successfully align pathologically migrated teeth and lead to improvement of periodontal stability in patients with periodontitis. Periodontic-orthodontic approaches have gained increasing attention in the past years. Here, we investigated the interest of adults affected by chronic periodontitis in undergoing orthodontic treatment as well as patient-related and tooth-related influence factors.

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The implantation of an alloplastic total temporomandibular joint (TMJ) prosthesis is an innovative approach for the treatment of end-stage TMJ disorders. Two types of system exist: prefabricated (stock) and customized computer-aided design/computer-aided manufacturing (CAD/CAM) devices. A clinical study was performed to evaluate the effectiveness of these two designs.

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