Aim. To compare microleakage of apexification using MTA in one or two sessions. Materials and Methods. 88 single rooted teeth were prepared and divided into two groups then received MTA apical plug. In the first group, the teeth were immersed in normal saline for 24 hours and then backfilled with guttapercha and AH26 sealer. In the second group, the teeth were obturated immediately after receiv...

AIM The aim of this article is to report a case of bilateral multiple impacted supernumerary teeth. A discussion of possible mechanisms of development is also presented along with a concise review of the literature. BACKGROUND Supernumerary teeth occur in the context of various scenarios in the primary and the permanent dentition. Multiple supernumerary teeth are a rare finding especially in ...

a Endodontic Postgraduate Program, CUCS-CUAltos, University of Guadalajara, México; b Adjunct Assistant Professor in Endodontics and Surgical Course Co-Director, Nova Southeastern University, College of Dental Medicine, Fort Lauderdale, Florida, USA; c Endodontic Postgraduate Program, CUCS, University of Guadalajara, México; d Department of Endodontics, Nova Southeastern Universitiy College of ...

Aim: Aim of this article is to present a case of delayed replantation of multiple, avulsed maxillary permanent teeth that had an extraoral dry time of about 22 hours with 6 month followup. Background: Dental avulsion is a real dental emergency in which prompt management affects the prognosis of the tooth. Avulsed teeth need to be replanted at the earliest in order to insure the best possible pr...

BACKGROUND Successful skin grafting requires multiple factors for success. An even distribution of constant pressure exerted upon the graft is necessary for successful graft take. It is well known that excessive pressure on a graft causes ischemia and may result in the failure of graft take. The aim of this study was to demonstrate the variation in skin pressure (tension) on curved surfaces, pa...

Chipped and broken functional teeth are common in modern sharks with serrated tooth shape. Tooth damage consists of splintering, cracking, and flaking near the cusp apex where the enameloid is broken and exposes the osteodentine and orthodentine. Such damage is generally viewed as the result of forces applied during feeding as the cusp apex impacts the skeletal anatomy of prey. Damage seen in s...

To examine the relationship between the defibrillation threshold and the strength of shocks that induce ventricular fibrillation during the vulnerable period, we determined the defibrillation threshold in 22 open-chest dogs using epicardial defibrillation electrodes with the cathode at the ventricular apex and the anode at the right atrium. We also determined whether there was an upper limit of...

OBJECTIVE To assess the prevalence of severe external root resorption and its potential risk factors resulting from orthodontic treatment. METHODS A randomly selected sample was used. It comprised conventional periapical radiographs taken in the same radiology center for maxillary and mandibular incisors before and after active orthodontic treatment of 129 patients, males and females, treated...

Microproteins are peptides and small proteins encoded by small open reading frames (smORFs). Newer technologies have led to the recent discovery of hundreds to thousands of new microproteins. The biological functions of a few microproteins have been elucidated, and these microproteins have fundamental roles in biology ranging from limb development to muscle function, highlighting the value of c...