(1) Background: Mandibular deficiency is one of the most common growth disorders of the facial skeleton. Recently, distraction osteogenesis has been suggested as the treatment of choice for overcoming the limitations of conventional orthognathic surgery; (2) Methods: A new custom-manufactured dental-anchored distractor was built and anchored in the first molar and lower canine. It consists of a stainless-steel disjunction screw, adapted and welded to the orthodontic bands through two 1.2 mm diameter connector bars with a universal silver-based and cadmium-free solder; (3) Results: The distractor described can be a useful tool to correct mandibular retrognathia and is better tolerated by patients, especially in severe cases; (4) Conclusions: The dental-anchored distractor increases the anterior mandibular bone segment without affecting the gonial angle or transverse angulation of the segments and avoids posterior mandibular rotation, overcoming the limitations of conventional surgical treatment.
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http://dx.doi.org/10.3390/bioengineering8110180 | DOI Listing |
J Clin Med
December 2024
Institute of Health Sciences, Erciyes University, Kayseri 38039, Türkiye.
The literature suggests that the cranial base angle is considered one of the contributing factors to sagittal jaw malpositions when its relationship with the viscerocranium is examined. Our study aims to compare and evaluate the outcomes of fixed functional orthopedic treatment in patients with mandibular retrognathia across different cranial base groups. Participants were treated at Erciyes University with fixed functional appliances and categorized by CBA into low (<130°), medium (130°-134°), and high (>134°) groups.
View Article and Find Full Text PDFOrphanet J Rare Dis
December 2024
Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Background: Meier-Gorlin syndrome (MGORS) is a rare autosomal inherited form of primordial dwarfism. Pathogenic variants in 13 genes involved in DNA replication initiation have been identified in this disease, but homozygous intronic variants have never been reported. Additionally, whether growth hormone (GH) treatment can increase the height of children with MGORS is unclear.
View Article and Find Full Text PDFBMC Pediatr
December 2024
Department of Endocrinology and Metabolism, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, 1678 Dongfang Road, Shanghai, 200127, China.
The ARCN1 gene encodes the delta subunit of the coatomer protein complex I (COPI), which is essential for mediating protein transport from the Golgi complex to the endoplasmic reticulum. Variants in ARCN1 are associated with clinical features such as microcephaly, microretrognathia, intrauterine growth restriction, short rhizomelic stature, and developmental delays. We present a case of a patient exhibiting intrauterine growth restriction, preterm birth, microcephaly, micrognathia, and central precocious puberty.
View Article and Find Full Text PDFClin Oral Investig
December 2024
Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, China.
Objectives: To compare the variations in the upper airway of children with skeletal Class II mandibular retrognathism treated with van Beek Headgear-Activator (vBHGA) and Twin-Block (TB) appliances.
Materials And Methods: 40 children were involved in this retrospective study and divided into two intervention groups: the vBHGA group and the TB group, each comprising 20 individuals with an average age of 11.13 years.
J Craniofac Surg
December 2024
Department of Oral and Maxillofacial Surgery, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo.
The new orthognathic treatment strategy of non-segmental fixation (non-fix) sagittal split ramus osteotomy (SSRO) with jaw exercise initiation on the second postoperative day, the so-called physiological positioning strategy (PPS), induces good skeletal stability with few temporomandibular joint (TMJ) symptoms after surgery in skeletal class III. This study aimed to clarify whether non-fix SSRO with modified PPS can be applied to skeletal class II. This retrospective study included skeletal class II patients who underwent non-fix SSRO to correct mandibular retrognathia.
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