Since the announcement of the species Australopithecus sediba, questions have been raised over whether the Malapa fossils represent a valid taxon or whether inadequate allowance was made for intraspecific variation, in particular with reference to the temporally and geographically proximate species Au. africanus. The morphology of mandibular remains of Au. sediba, including newly recovered material discussed here, shows that it is not merely a late-surviving morph of Au. africanus. Rather-as is seen elsewhere in the cranium, dentition, and postcranial skeleton-these mandibular remains share similarities with other australopiths but can be differentiated from the hypodigm of Au. africanus in both size and shape as well as in their ontogenetic growth trajectory.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1126/science.1232997 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Proper alignment of the teeth not only aids in functional occlusion but also promotes harmonious gingival contours, potentially reducing the risk of inflammation and gingival recession. This case series aimed to evaluate the effectiveness of optimizing axial inclination through clear aligner orthodontic treatment in addressing gingival recession defects. This case series included nine patients, aged 20-36 years, who presented with varying degrees of gingival recession on 12 mandibular incisors.
View Article and Find Full Text PDFThe Impact of Injectable Platelet-rich Fibrin on Orthodontic Tooth Movement during Retraction: A Randomized Controlled Trial.
J Contemp Dent Pract
September 2024
Department of Orthodontics and Dentofacial Orthopedics, Chettinad Dental College & Research Institute, Chengalpet, Tamil Nadu, India.
Aim: This study intended to comprehend the effects of injectable platelet-rich fibrin (i-PRF) on anchor loss and space closure rates during the retraction phase of orthodontic treatment.
Materials And Methods: Twenty-four participants with malocclusion, necessitating extractions and space closure during orthodontic treatment, were enrolled and divided into two groups ( = 12 participants) group A: the experimental group was administered i-PRF on the maxilla/mandible, while group B: the control group did not. Measurements of the rate of space closure, anchor loss, and salivary enzyme activity were done before retraction (T0), after three weeks (T1), after six weeks (T2), and after nine weeks (T3).
Is ADDM graft practical? A comparative study to evaluate ADDM graft in third molar surgery.
Oral Maxillofac Surg
January 2025
Teerthanker Mahaveer University, Morādābād, India.
Background: It has been outlined that LTM (Lower third molar) extracted from patients in which grinding, cleaning, sterilization & demineralization prove to be highly effective as graft material for filling the alveolar socket of the very same patient. These investigations aim to assess the efficiency of ADDM (Autogenous Demineralized Dentin Matrix) graft in third molar extraction sockets.
Purpose: To check the effectiveness of ADDM as graft material in extraction socket by evaluating pain, swelling, trismus, PD (Probing Depth) and bone density.
Reduction of ischemic time using the pull-through technique for scapular free flap.
Oral Maxillofac Surg
January 2025
Department of Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
Purpose: Current scapular free flap (SFF) harvest in mandibular reconstruction often requires repositioning, hindering simultaneous harvest and resection and potentially increasing ischemic time. This study evaluated the efficacy of the pull-through technique (PTT) for SFF harvest, aiming to reduce ischemic time during mandibular segmental resection.
Methods: A retrospective analysis was conducted on 24 patients who underwent mandibular reconstruction using SFF at two maxillofacial surgery departments between January 2015 and May 2022.
Limitations of Osteocutaneous Radial Flap Despite Satisfactory Outcomes in Anterior Mandible Reconstruction With Dental Implants.
J Craniofac Surg
January 2025
Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea.
The management of oral malignancy necessitates a comprehensive approach focusing on disease eradication and patient quality of life. Surgery remains pivotal, although extensive resection can lead to aesthetic and functional challenges. Reconstruction, often with osteocutaneous radial forearm free flaps (OCRFFF), is crucial for restoring form and function.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!