Implant placement with guided bone regeneration in esthetic zone- A case report

Alveolar ridge deficiency is considered a major limitation for successful implant placement, as well as for the long-term success rate, especially in the anterior maxillary region. Implants placed without regard for prosthetic position often results in dental restorations that are functionally and esthetically compromised. Adequate peri-implant bone support is essential for immediate and long-term implant stability, as well as for future esthetic outcome. To achieve this goal, augmentation of lost bone is often necessary. A variety of surgical approaches have been proposed to enhance the alveolar bone volume. Guided bone regeneration (GBR) is the most common technique for localized bone augmentation. GBR, by application of cell occlusive membranes that mechanically exclude non-osteogenic cell populations from the surrounding soft tissues, has become a well-documented and highly successful procedure for localized augmentation of the atrophic jaw before or simultaneously with implant placement. This case report presents simultaneous approach of guided bone regeneration and implant placement in the maxillary anterior region with narrow ridge defect.

Full Mouth Rehabilitation Using Alveolar Ridge Splitting Technique with Immediate Implant Placement in the Maxilla and Delayed Implant Placement in the Mandible: A Case Report with 4 Years Follow-Up

The bone split technique is used to increase the width of a narrow ridge for implant placement with high success rates. This technique was performed on a 53-year-old patient with bilateral mandibular posterior edentulous and fully edentulous maxilla. Implants placement was performed afterward with two-step modus operandi on the mandible and immediate placement on maxilla. A successful prosthetic rehabilitation was done following the healing phase. This approach led to full restoration of function and esthetic with a predictable outcome.

Occipital-Dural Muscle: A Specialized Myodural Bridge in Narrow-Ridge Finless Porpoise (Neophocaena Asiaorientalis)

A dense bridge-like tissue named the myodural bridge (MDB) connecting the suboccipital muscles and the spinal dura mater was originally discovered in humans. Recent studies have revealed that the MDB confirmed a universal existing normal anatomical structure in mammals which is considered being significant in physiological functions. Our previous investigations have confirmed the existence of MDB in the finless porpoises. We conduct this research to expound the specificity of the MDB in Neophocana asiaeorientalis (N.asiaeorientalis). Five carcasses of N.asiaeorientalis with formalin fixation were used for this study. Two were used for head and neck CT scanning, three-dimensional reconstruction, and dissection of suboccipital region. One was used for P45 plastinated sheets observation. One was for histological analysis of suboccipital region. One was for Scanning electron microscopic study. The results showed that the MDB in N.asiaeorientalis is an independent muscle originated from the caudal border of occiput, directly extended through the posterior atlanto-occipital interspace and connected with the cervical spinal dura mater. Thus the MDB in N.asiaeorientalis is an independent and specialized muscle. Based on the origin and termination of this muscle, we could name it as ‘Occipital-Dural Muscle’. And the direct pull on the cervical spinal dura mater might affect the circulation of the cerebrospinal fluid (CSF) by altering the volume of subarachnoid space of spine.