This report presents information from the national linked birth and infant death data set for the birth cohort of 1985, a new National Center for Health Statistics (NCHS) resource for studying infant mortality. In the linked tile, birth certificates for infants born in 1985 who died before their first birthday are linked to death certificates for the same infants, thereby making available for a...

Introduction Success of root canal treatment depends on several factors; among which, maintaining the original canal path during mechanical preparation is extremely important. This in vitro study aimed to compare apical transportation using RaCe NiTi rotary system and precurved stainless steel (SS) hand files in a reciprocating handpiece. Methods and Materials Mesiobuccal canals of 40 extract...

The National Center for Health Statistics (NCHS) has produced the 1986-2000 National Health Interview Survey (NHIS) Linked Mortality Files by linking eligible adults in the 1986-2000 NHIS cohorts through probabilistic record linkage to the National Death Index to obtain mortality follow-up through December 31, 2002. The resulting files contain more than 120,000 deaths and an average of 9 years ...

INTRODUCTION One of the most important reasons for postoperative pain is the extrusion of debris from the apical foramen during preparation and shaping of root canals. The aim of this clinical trial was to evaluate the severity of postoperative pain with the use of two different engine-driven NiTi systems. METHODS AND MATERIALS Ninety mandibular molars were randomly divided into two groups (n...

A pernicious type of security problem, race conditions create a timing interval in which the manipulation of resources allows an attacker to gain privileges, read and alter protected files, and violate the security policy of the site. The majority of these conditions found on applications and system programs in the UNIX operating system arise during file system manipulation and file accesses. T...

The Social Security Administration (SSA) has, from its beginnings, recorded the race and ethnicity provided by those who apply for a Social Security card. Although some of these data are eventually used in published tabulations when persons file for benefits, problems with the data prevent a larger selection of published tables. These problems stem from: incomplete internal SSA computer process...

introduction : dentin removal during root canal instrumentation creates a weaker root structure and increases its potential to fracture. the aim of this in vitro experimental study was to compare fracture resistance of teeth filled with gutta-percha, and resilon using two different techniques. materials and methods: this study was performed on 105 single-canal extracted maxillary incisors. samp...

DuringWorld War I male French citizens in Cochinchina whom the colonial government had drafted to fight in Europe left their families behind in the colony.Through a complicated subsidies process, the government offered financial assistance to families impoverished by the draftee’s departure and the concomitant loss of income. Far from being a monolithic category, the colony’s poor white applica...

INTRODUCTION The aim of this study was to evaluate, using cone-beam computed tomography (CBCT), transportation and centralization of different nickel-titanium (NiTi) rotary instruments. METHODS One hundred and twenty eight mandibular premolars were selected and instrumented using the following brands of NiTi files: WaveOne, WaveOne Gold, Reciproc, ProTaper Next, ProTaper Gold, Mtwo, BioRaCe a...