There is a considerable debate between research groups applying the two-stage clonal expansion model for lung cancer risk estimation, whether radon exposure affects initiation and transformation or promotion. The aim of the present study is to quantify the effects of radon progeny on these stages with biophysical models. For this purpose, numerical models of mutation induction and clonal growth...

A 19-year-old man presented for correction of a malocclusion that included a transverse maxillary deficiency. The patient was informed that he required orthognathic surgery to expand his upper jaw and correct his malocclusion, but he refused surgical expansion. Recent evidence indicates that rapid palatal expansion can be used without surgery in young adults; the decision was therefore made to ...

We present two patients with acute myelogenous leukemia who developed palatal mucormycosis, as well as a review of 15 well described reported cases of the same condition in patients who had hematologic malignancy and had undergone hematopoietic stem cell transplantation. Early diagnosis of palatal mucormycosis requires high suspicion of the disease along with a thorough oral examination. Mucorm...

The designation labio-maxillo-palatal cleft is used to describe two types of congenital malformations of the palate. The mechanisms that create them occur in the early weeks of fetal life by an alteration of embryological message delivery that researchers have been able to analyze. But they have not as yet been able to discern the multi-factorial causes of this alteration. Morphological embryol...

Maxillary deficiency in the transverse dimension is a common problem children. The conventional management of such malocclusion with rapid maxillary expansion. beneficial effects an orthodontic therapy are explained detail literature. But there also negative Thus, improvements methods expansion has led to discovery miniscrew assisted palatal supported by mini implants and thus enable better ske...

The management of cleft lip and palate can vary among patients because the size of a cleft defect and its anatomy vary. Although treatments involving orthodontics and surgery have been developed that can help a large number of children with cleft lip and palate, there are always unusual clefts that defy conventional treatments. In such cases, with each gain made during treatment, there also is ...

The midpalatal suture has bone margins with thick connective tissue interposed between them, and it does not represent the fusion of maxillary palatal processes only, but also the fusion of palatal processes of the jaws and horizontal osseous laminae of palatal bones. Changing it implies affecting neighboring areas. It has got three segments that should be considered by all clinical analyses, w...

OBJECTIVES This study examined the effects of palate depth, modifications of the arm shape, and anchor screw placement in the mid-palatal area on rapid maxillary expansion (RME) using finite element (FE) analysis. MATERIALS AND METHODS Three-dimensional FE models were constructed that included the maxilla (cortical and cancellous bone), maxillary sinus, maxillary first molar and first premola...

AIM To assess the microbial level of Streptococcus Mutans and Lactobacillus spp. during rapid palatal expansion, and compare the data with untreated control patients. MATERIALS AND METHODS STUDY DESIGN Thirty patients aged between 6-9 years were enrolled in this study (15 males and 15 females). The patients were divided into three groups: 10 patients were treated with rapid palatal expande...