The aim of the study was to evaluate clinically and radiographically the volume changes of alveolar grafting guided by resorb-X membrane.This study was conducted on six patients, selected from the Outpatient Clinic of Oral and Maxillofacial Surgery Department, Faculty of Oral and Dental Medicine, Cairo University. Their ages ranged between 22 and 42 years (mean age was 32 years). All patients had labial alveolar bone defect ≥3mm in the maxillary anterior region.Thorough pre-operative assessment of the patients carried out include history taking, physical examination and radiographic examination. The pre-operative volume and bone width of the defective alveolar ridge were measured on Computed Tomographic Cone Beam scans (CBCT).A crestal incision and 2 vertical releasing incisions were performed; and a full-thickness flap was raised. The resorb-X membranes used were 0.1 mm in profile and were adapted to alveolar ridge defects. The base of the resorb-X membrane was fixed with sonic pins. The defect was completely filled with Smart bone Xenogenic bone graft particles (0.25- 1mm) according to the size of the alveolar ridge defect. The labial flap was then approximated to the palatal tissue and multiple interrupted sutures were done using 3-0 AssuCryl suture.The operative procedure was similar for all patients, and the follow- up period was 4 months in the form of clinical evaluation and radiographic evaluation by CBCT scans to measure the volume of bone fill and bone density at end.At the end of the follow-up period, no signs of infection or evidence of bone resorption were found. The resorb-X membrane and pins were completely resorbed. The radiographs showed newly formed bone and increase in alveolar bone volume and width in all cases. All augmented alveolar ridges showed good maturation of bone graft on the follow-up CBCT scans with evidence of normal bony architecture. No evidence of fibroses or scarring was noted in the bone graft.Post-operatively the alveolar ridge width at 2 mm from alveolar crest ranged from 4.30 – 7.25 mm with a mean of 6.08 ± 1.03 mm, while at 4 mm from alveolar crest, the alveolar ridge width ranged from 4.61 – 8.16 mm with a mean of 6.66 ± 1.29 mm, at 6 mm from alveolar crest, the alveolar ridge width ranged from 5.04 – 9.07 mm with a mean of 7.16 ± 1.78 mm and at 8 mm from alveolar crest, the alveolar ridge width ranged from 4.64 – 10.76 mm with a mean of 7.64 ± 2.48 mm. In addition to the alveolar ridge post-operative volume ranged from 426.11 – 941.24 mm3 with mean volume of 617.32 ± 195.01 mm3. There was increase in bone volume by 36.15% postoperatively compared to preoperative alveolar ridge volume. Paired sample t-test showed a statistically significant increase of bone volume, width post-operatively (p<0.05).The density of native bone ranged from 329.58 to 1185.40 HU with a mean value of 800.15 ± 321.17 HU. The density of the newly formed bone four months post-operatively ranged from 251.25 HU to 848.60 HU with a mean value of 644.88 ± 244.68 HU. Student t-test showed a statistically non-significant change in bone density four months post- operatively (p>0.05).