Objectives: This study aimed to compare the dentin block (D-group) harvested from impacted wisdom teeth with autogenous ramus bone block (A-group) for horizontal alveolar ridge augmentation. Materials and methods:Forty-two patients with anterior missing teeth and horizontal ridge defect were randomly assigned to two groups (n = 21 per group) to receive either dentin block group or autogenous bone block. Six months after the augmentation, dental implants were placed in all patients, and a core biopsy was performed for histological evaluation in addition to clinical and radiographic evaluation using cone beam computed tomography. The primary outcome was the mean overall clinical ridge width gain (CRWG) after 6 months of augmentation. Secondary outcomes were the overall radiographic ridge width gain (RRWG) after 6 months of augmentation and descriptive histological analysis with histomorphometric assessment of bone fraction %.Results: All sites healed uneventfully, and the mean overall CRWG 6 months after augmentation was 3.52 ± 0.56 mm and 2.24 ± 0.86 mm in the D and A groups, respectively, with statistically significant difference between them (P ≤ .001). The overall mean RRWG was 3.61 ± 0.61 mm and 3.41 ± 1.15 mm in D and A groups, respectively, without any statistically significant difference between them (p = .062). The histomorphometric analysis of the bone area fraction was 42.6% and 41.3% in D and A groups, respectively, without any statistically significant difference between the two values (p = .89, Student's t-test). Histological evaluation in the D-group revealed new bone formation, viable cells, and matrix formation on the dentin block periphery, in addition to well-organized woven bone that suggests dentin block remodeling and supports new bone deposition. Conclusion:The present clinical study revealed that dentin block may serve as an alternative graft to support horizontal alveolar ridge augmentation. Dentin blocks showed less resorption than autogenous bone blocks.

Objective In the anterior region, the resorption of the buccal plate of bone after tooth extraction leads to contraction of the overlying soft tissues, resulting in an esthetic problem. In the socket shield technique, the buccal root section of the tooth is maintained, to preserve the buccal bone for immediate implant placement. The aim of this randomized clinical trial was to investigate the effect of leaving a gap or not between implant and retained root fragment on bone dimensions and soft tissue esthetics. Methods This was a two armed parallel group randomized clinical trial with allocation ratio 1:1. Patients were eligible in case they needed immediate implant replacing teeth in esthetic zone with sufficient buccal bone support. CBCT was performed immediately after the intervention and 12 months later. Results Forty six patients (26 females and 20 males) were enrolled in the study with 23 of them placed in contact with shield and 23 were placed palatal leaving a gap to graft with a xenograft. After 12 months, excellent soft tissue stability was reported (mean pink esthetic score at placement group A: 12.00 ± 1.60 after 12 months 12.90 ± 1.69, group B 12.62 ± 2.07 and after 12 months 12.38 ± 2.20) Using both surgical techniques. Radiographic crestal bone level changes mean for group A was −0.26 ± 0.52 and for group B ‐0.34 ± 0.31. There was a strong positive correlation between clinical and radiographic bone width values which was statistically significant (r = 0.782, p < 0.001). Width and thickness of keratinized gingiva showed no significant difference between values measured in both groups. Nonsignificant difference between studied groups according to the labial plate of bone clinical and radiographic changes after immediate implantation. Conclusion Within the limitations of this study, the present data seem to support that the clinical outcome of the socket shield technique with immediate implant placement placed in contact or leaving a gap gave excellent esthetic results.

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Alveolar ridge preservation (ARP) is regenerate and increase the amount of hard and soft tissue at the defect site. Injectable platelets rich fibrin (I-PRF) has the effect of promoting osteoblast migration, adhesion, proliferation, cell differentiation, and bone tissue formation. Hyaluronic (HA) has shown anti-inflammatory, anti-edema and antibacterial effects. A 37-year-old female patient had an ARP, the first socket (2nd premolar) was filled completely with xenograft mixed with hyaluronic acid to form sticky bone. the second socket (1st premolar) was filled also with xenograft bone mixed with I-PRF to form sticky bone, free gingival graft were sutured using 4-0 propylene sutures. Postoperative instructions were given to the patient along with antibiotics and analgesic to minimize the risk of postoperative infection and pain. After 4 months following spontaneous healing of the grafting surgery. In conclusion, both I-PRF and HA added a beneficial value to alveolar ridge augmentation.

Aim: Radiographic assessment of dimensional changes of peri implant tissues in immediately placed implants with non-functional loading in maxillary esthetic zone with Internal Hex (IH) and Conical Tapered (CT) connections Materials and Methods: 20 immediately placed implant with immediate loading were inserted in the maxillary esthetic zone, patients meeting the inclusion criteria were allocated into one of the two groups: Internal Hex or Conical tapered connection. Results: Pink Esthetic Scores(PES) of the CT connection showed significantly higher values than IH. It was shown that the IH group showed statistically significant higher mean value than the CT connection in the values of crestal bone loss using CBCT. Conclusion: CT connection has proved to result in better clinical, radiographic and volumetric outcomes than IH.

Background: Oral lichen planus (OLP) is a relatively common chronic inflammatory immune-mediated disease affecting the oral mucosa with episodes of exacerbations and remissions. The current study was aimed to compare between the therapeutic outcomes of using low level laser therapy (LLLT) and topical steroids in management of symptomatic OLP and to correlate between the salivary levels of interleukin-6 (IL-6) in in relation to the clinical scores (CS) and pain visual analogue scores (P-VAS) before and after treatment. Subjects and methods:  40 participants were included in this study and were divided into 4 groups of 10 participants each. Group (I) included ten symptomatic atrophic or erosive OLP patients and received topical steroid (triamcinolone acetonide 0.1%). Group (II) comprised also of ten patients having symptomatic OLP and managed with LLLT using 810 nm diode laser. Group (III) included ten patients with asymptomatic reticular OLP. Group (IV) included ten healthy volunteers having no oral or skin lichen planus lesions.

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