Treatment Of Maxillary Hypoplasia Research Articles

Volumetric evaluation of maxillary sinuses using CBCTS: radiographic study

The evaluation of maxillary sinus volumes is fundamental for pre-surgical planning in this area, as well as for the diagnosis of sinusitis and the diagnosis and treatment of maxillary hypoplasia. This study aimed to assess changes in sinus volume over time as a function of different conditions, such as sex, orthodontic treatments like rapid palate expansion, and the presence of edentulism. The Cone-Beam Computed Tomographies of eighteen patients were selected, and their entire sinus volumes were segmented, enabling the measurement of the sinus volume in three spatial dimensions. The collected data were statistically analyzed using the T-Student test and ANOVA. The mean size of the measured right sinus volume was 14.42 cm³, and that of the left sinus was 14.17 cm³. No statistically significant difference was identified between the right and left maxillary sinus volumes, even in correlation with the considered factors (p-value > 0.05). The values found in the present study agreed with those in the literature, confirming the importance of radiographic evaluation of this structure for diagnosis and treatment planning.

Maxillary Protraction: A Bibliometric Analysis

ObjectivesThe aim of this analysis was to investigate the historical development, current status, and research hot spots related to maxillary protraction in the treatment of maxillary hypoplasia. MethodsThe term “TS = maxillary protraction” was used to search for articles in the Web of Science Core Collection at the library of Capital Medical University. The results were analysed using CiteSpace6.2.R1 software, including the examination of annual publication trends and analysis of author, country, institution, and keywords. ResultsA total of 483 papers were included in this study. The annual publications showed an overall increasing trend. The top 5 authors with the most published papers were Lorenzo Franchi, Tiziano Baccetti, Seung-Hak Baek, Paola Cozza, and U Hagg. The top 5 countries with the highest publication counts were the US, Turkey, South Korea, Italy, and China. The top 5 institutions in terms of the number of published papers were the University of Florence, the University of Michigan, Kyung Hee University, Seoul National University, and Gazi University. The top 3 journals with the most citations were the American Journal of Orthodontics and Dentofacial Orthopedics, Angle Orthodontist, and the European Journal of Orthodontics. Furthermore, “Maxillary protraction,” “Class III malocclusion,” and “Maxillary expansion” were the most common keywords. ConclusionsThe effective age range for maxillary protraction has been expanded with the introduction of skeletal anchorage and the combination of maxillary expansion and protraction. Skeletal anchorage offers significant advantages over dental anchorage, but there is a need for further research to further substantiate its stability and safety. In recent years, the positive effects of maxillary protraction on the nasopharyngeal area have been well established, but its impact on the oropharyngeal area remains a topic of debate. Therefore, it is crucial to conduct further investigations into the effects of maxillary protraction on the oropharyngeal area and explore the factors that influence different outcomes.

Anterior Maxillary Osteotomy Distraction Osteogenesis (Amodo) in the Treatment of Maxillary Hypoplasia in Unilateral Cleft Lip and Palate-A Case Report

Distraction osteogenesis defines a technique of bone generation by distraction of native bony segments. The technique offers a promising treatment alternative for patients with maxillary or midfacial hypolasia. In this case report, the various steps in the treatment of an 18 year old boy with premaxillary hypoplasia and anterior crossbite are described. Patient was treated with a distraction osteogenesis technique and premaxillary advancement was performed using individual tooth - borne distraction device. The surgical procedure involved an anterior segmental maxillary osteotomy respecting the palatal periosteum. Distractor was cemented in the mouth after the surgical procedures. The patient was observed during a seven day latency period after which the device was activated 0.4mm every 12 hours. The anterior crossbite was eliminated and the occlusal correction and settling was achieved with fixed orthodontic appliances.

Finite element and clinical analyses of effects of a new intraoral device (VomPress) combined with extraoral RAMPA on improving the overjet of craniofacial complex

This research intends to investigate the effects of a new intraoral device, VomPress, combined with a Right Angle Maxillary Protraction Appliance (RAMPA) extraoral device on the treatment of maxillary hypoplasia. To this end, finite element (FE) method has been employed and a skull model, including all sutures, has been investigated. In addition, the effects of VomPress combined with RAMPA on a seven-year-old girl with the malocclusion and other side problems were monitored. The results of both FE simulations and the clinical data revealed that VomPress combined with RAMPA effectively improved the malocclusion and straight neck problem by creating more space in the patient’s mouth and anterosuperior protraction effects.

Compare molar’s alveolar bone width and angulation changes between cleft lip and palate and non-cleft patients following transverse correction of maxillary hypoplasia

Purpose: This study aimed to compare maxillary alveolar bone width in 1st molar region and molar angulation between growing individuals with Cleft Lip and Palate (CLP) and Non-Cleft Class III instances that received Rapid Maxillary Expansion (RME) as a treatment of maxillary hypoplasia. Subjects and Methods: This retrospective study included two groups, Cleft Group; 8 CLP patients and Non-Cleft Group; 12 Non-Cleft cases with maxillary hypoplasia. The children's ages spanned from 8 to 12 years old. The two groups received treatment consisting of maxillary expansion utilizing with RME protocol followed by 6 months of consolidation. Cone Beam Computed Tomography (CBCT) was taken prior therapy (T1) and following six months of expansion (T2). Results: In Cleft and Non-Cleft groups, the buccal alveolar bone width displayed statistically significant decline, however the palatal alveolar bone width displayed statistically significant increase. The molar angulation was increased significantly in the two groups. There were statistically non-significant variations in alveolar bone width and 1st molar angulation changes among Cleft and Non-Cleft groups. Conclusion: Patients with CLP have the same maxillary first molar angulation changes as well buccal and palatal alveolar bone width at molar area as non-cleft patients those have Class III malocclusion.

Functional treatment of maxillary hypoplasia and mandibular prognathism

Functional treatment of maxillary hypoplasia and mandibular prognathism

Anterior Maxillary Segmental Distraction Osteogenesis for Treatment of Maxillary Hypoplasia in Patients With Repaired Cleft Palate

Anterior Maxillary Segmental Distraction Osteogenesis for Treatment of Maxillary Hypoplasia in Patients With Repaired Cleft Palate

Treatment of Maxillary Hypoplasia in Cleft Lip and Palate: Segmental Distraction Osteogenesis With Hyrax Device.

The objective of this work is to describe a segmental maxillary distraction osteogenesis (SDO) with segmental Lefort I with an inexpensive device.Four patients who presented severe class III and maxillary hypoplasia due to cleft lip and palate sequel were treated. A SDO was performed using a dental-anchored Hyrax device, achieving enlargement of the upper jaw without altering speech, with adequate and stable occlusion. Dental implants in a new formed bone were installed.The authors can conclude that SDO is a good treatment alternative for patients with maxillary hypoplasia. It preserves velopharyngeal function and is a stable treatment, maintaining the overjet achieved with distraction osteogenesis, without changes in posterior occlusion. The open bite generated with tooth-borne devices can be solved with temporary anchorage devices and intermaxillary elastics during consolidation phase. Modified Hyrax device allows expanding and moving forward the maxillary arch, with a low cost.

Techniques for the Treatment of Maxillary Hypoplasia in Cleft Patients: An Overview

Purpose of review Maxillary hypoplasia is often unavoidable sequelae in cleft lip and palate patients who had undergone timely surgical and orthodontic intervention. Since 1970s these deformities have been traditionally corrected by means of orthognathic surgery. Numerous published studies have tried different techniques to combat the same. The advantages and disadvantages of the various techniques are overviewed. Recent Findings Distraction osteogenesis is one of the recent major developments in the field of oral and maxillofacial surgery and provides promising outcome. Tooth borne device hyrax proved good skeletal stability of distracted anterior maxillary segment. Distraction forces when directly transferred to the bone resulted in significant dentoalveolar compensation. This modern technique has also been used to evaluate its immediate and long term impact on nasal index as well which showed significant increase. This technique overcomes significant disadvantages of relapse and velopharyngeal insufficiency and also helps to produce better normal facial esthetics and profiles and masticatory function. Summary The oral and maxillofacial surgeons have widely accepted the use of maxillary distraction osteogenesis as an attractive alternative to treat malocclusion in CLP patients and this has broadened the reconstructive spectrum. Recent advancements have led to a wider clinical application and improved acceptance.

Le fort I maxillary advancement using distraction osteogenesis.

Treatment of maxillary hypoplasia has traditionally involved conventional Le Fort I osteotomies and advancement. Advancements of greater than 10 mm risk significant relapse. This risk is greater in the cleft lip and palate population, whose anatomy and soft tissue scarring from prior procedures contributes to instability of conventional maxillary advancement. Le Fort I advancement with distraction osteogenesis has emerged as viable, stable treatment modality correction of severe maxillary hypoplasia in cleft, syndromic, and noncleft patients. In this article, the authors provide a review of current data and recommendations concerning Le Fort I advancement with distraction osteogenesis. In addition, they outline their technique for treating severe maxillary hypoplasia with distraction osteogenesis using internal devices.

Hyrax Application as a Tooth-Borne Distractor for Maxillary Advancement

Distraction osteogenesis (DO) has become a mainstream surgical technique for patients with jaw deformities. The aim of this study was to report the use of internal DO in the treatment of maxillary hypoplasia in a patient with cleft lip and palate. The case illustrates a 17-year-old boy with class III malocclusion, maxillary deficiency, and cleft lip and palate. Because the patient was experiencing severe hypernasality, it was decided to treat him by DO. The treatment process began by mounting a hyrax in the upper jaw for lateral expansion. A second hyrax was mounted in a way to create anteroposterior expansion. One day after the second hyrax application, the patient underwent a modified Le Fort I osteotomy. He was instructed to turn the screws twice per day for 12 days. The treatment was continued by means of a conventional face mask for 2 months. After 16 months of active treatment, favorable correction of the skeletal problem was observed. The S-N-A angle increased by 5 degrees, and patient's hypernasality was comprehensively improved.

The Use of Internal Maxillary Distraction for Maxillary Hypoplasia

Statement of the Problem: Distraction osteogenesis is a useful alternative to advance the maxilla in complicated cases of maxillary hypoplasia. Over a five year period, our institution has gathered data regarding the work-up, experience, and results of maxillary advancement using internal distractors in the treatment of maxillary hypoplasia.

Prevention of halo pin complications in post-cranioplasty patients

Distraction Osteogenesis has been successfully implemented in the treatment of maxillary hypoplasia. By using the Rigid External Distraction device (RED) the maxilla can be advanced without the need for bone grafts, providing more stability to the repositioned maxilla. The introduction of the RED system in craniofacial surgery has given rise to previously unseen problems. To provide a set of protocol improvements that might prevent the intracranial pin migration seen at the removal of a RED-II in one patient. Although the RED device has been shown to achieve good clinical results, there are some disadvantages to the system. There is a high incidence of pin tract infections - leading to loosening of the pins and loss of rigidity. Also, the external ring is prone to traumatic injury. Furthermore, the positioning of the pins can be difficult in thin bone. The improvements used in our protocol might prevent this complication.

State of the art in oral and maxillofacial surgery: treatment of maxillary hypoplasia and anterior palatal and alveolar clefts.

As the new millennium approaches, it seems appropriate to look back at where we have been and where we are going with the care of patients with facial deformities. None of us can deny that although changes have been made, many current treatment modalities are no more than modifications of old techniques. We are, however, poised to make dramatic improvements in the management of facial abnormalities as we enter the new century and millennium. Biotechnology, genetic manipulation, and new surgical technology will become pervasive, and perhaps we will move from "modification" of the old into a completely new era of therapeutic approaches to the care of dentofacial deformities. "Opportunities multiply as they are seized" (from Sun Tzu), and the time of opportunity is approaching. This review will attempt to look at the state of the art in cleft care and in oral and maxillofacial surgery: where we have been and where we are going. It will be clear that there is overlap between specialties and that these overlaps will become greater as new regimens in the care of facial deformities come to the forefront.

State of the Art in Oral and Maxillofacial Surgery: Treatment of Maxillary Hypoplasia and Anterior Palatal and Alveolar Clefts

State of the Art in Oral and Maxillofacial Surgery: Treatment of Maxillary Hypoplasia and Anterior Palatal and Alveolar Clefts

The Surgical Correction of Maxillary Hypoplasia and Midfacial Retrusion

On the basis of 35 maxillary osteotomies of the Le Fort I and III types, the authors discuss the main problems connected with treatment of maxillary hypoplasia and midfacial retrusion. Special attention is paid to cases that demand coordinated treatment including skeletal as well as soft tissue repair and reconstruction. Thanks to combined treatment in all cases, including 7 patients with partial backward displacement of the osteotomized fragments whose occlusion could not be entirely corrected, striking or highly satisfactory improvement of appearance was achieved.

The Surgical Correction of Maxillary Hypoplasia and Midfacial Retrusion

On the basis of 35 maxillary osteotomies of the Le Fort I and III types, the authors discuss the main problems connected with treatment of maxillary hypoplasia and midfacial retrusion. Special attention is paid to cases that demand coordinated treatment including skeletal as well as soft tissue repair and reconstruction. Thanks to combined treatment in all cases, including 7 patients with partial backward displacement of the osteotomized fragments whose occlusion could not be entirely corrected, striking or highly satisfactory improvement of appearance was achieved.