Dentinal dysplasia type I (DDI) is a rare disturbance in dentin formation. This case report illustrates different radiographic features from other reported DDI cases in that only one quadrant (lower right posterior teeth) has the characteristic of DDI and both right and left upper molars exhibit taurodontism. This finding might be a variation of DDI. However, it is possible that this type of de...

OBJECTIVES To assess the knowledge and behaviour of researchers regarding criteria for authorship, and the practices of ghost and gift authorship. DESIGN Semidirective interviews of senior clinical researchers. SETTING University hospital. PARTICIPANTS Thirty-nine main investigators of clinical research programmes. MAIN MEASUREMENTS Awareness and use of International Committee of Medica...

Two cases of regional odontodysplasia in girls are reported; one affected the lower incisors, and the other the left maxilla. The first case was radiographically followed over a 6-year period, during which time the ghost teeth exhibited significant dentin formation, along with a resultant decrease in pulp size and relative normalization of the radicular anatomy. The second case involved the dec...

BACKGROUND Ghost authorship, the failure to name, as an author, an individual who has made substantial contributions to an article, may result in lack of accountability. The prevalence and nature of ghost authorship in industry-initiated randomised trials is not known. METHODS AND FINDINGS We conducted a cohort study comparing protocols and corresponding publications for industry-initiated tr...

Regional odontodysplasia (ROD) is uncommon developmental anomaly, which tends to be localised and involves the ectodermal and mesodermal tooth components. A five-year-old female was referred to Department of Child Dental Health at the Leeds Dental Institute regarding malformed primary teeth. On examination 64, 74, and 72 had localised hypomineralized enamel defect. The crown of 55 was broken do...

A healthy 13-year-old female was found to have no roots on the maxillary left second premolar and permanent first and second molars. Her history included chronic sinus infections treated with maxillary sinus curettage at approximately 4 years of age. The infection, or more likely the trauma associated with the surgery, may have caused agenesis of the roots. Other causes of rootless teeth such a...

Transparently documenting who and why a person is an author of a clinical trial report, as with any other article, is important since it allows research team members appropriate recognition and also likely helps reduce or avoid problems such as ghost authorship. Marušić and colleagues have previously proposed a five-step framework for attributing authorship of pharmaceutical company-sponsored c...