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Air exchanges per hour in an operatory with an in-operatory air cleaner. Wuhan hospital study.

How to calculate air exchanges per hour (ACH) in an operatory with an in-operatory air cleaner (HEPA filter unit): The typical dental operatory has an area 100 square feet with an 8 foot ceiling, which gives a volume of 800 cubic feet. Following an aerosol generating procedure, the operatory must be left empty to permit […]

Is Coronavirus viable in aerosol?

According to a recent report by Neeltje van Doremalen, Ph.D. published in the New England Journal of Medicine, 2019-CoV-2 can remain viable and infectious in aerosol for hours and on surfaces for up to 72 hours. “Our results indicate that aerosol and fomite transmission of SARS-CoV-2 is plausible, since the virus can remain viable and […]

Clarithromycin Beneficial with Full Mouth Debridement in Generalized Aggressive Periodontitis?

Methods: Forty patients were randomly assigned to one of two groups: 1) Full Mouth Debridement with Clarithromycin 500mg every 12 hours for 3 days. 2) Full Mouth Debridement with placebo pills. Results: Both groups were effective for clinical and microbiological parameters. The Clarithromycin group presented with lower mean probing depths for pockets ≥ 7mm at […]

Emdogain plus Calcium Phosphate for Two-Wall Defects?

Methods: 52 patients with at least one non-contained infrabony defect ≥ 3 mm and probing ≥ 3 mm were randomly treated with either Emdogain plus biphasic calcium phosphate or Emdogain alone. The primary outcome was a change in clinical attachment up to 12 months. Results: Mean clinical attachment gain of 2.38 mm ± 2.17 mm was […]

Good long term results for tissue grafts?

  Methods: Forty-seven patients with 64 sites with lack of attached gingiva were treated with free gingival grafts and 64 control sites were left untreated.  Patients were recalled every 4 to 6 months.  Gingival recession depth, keratinized tissue width, and probing depth were measured at baseline and extending to the follow up period (18 to […]

Platelet-rich fibrin (PRF) to treat periodontal intrabony defects?

Methods: 36 intrabony defects in 36 individual patients were treated with either demineralized freeze-dried bone allograft (DFDBA) or platelet-rich fibrin (PRF).  Data was collected at baseline and at 6 month follow up and included radiographic bone fill and changes in clinical attachment levels (CAL). Results: Both treatment groups had significant gain in clinical attachment levels […]

Are Long Terms Results for Collagen Matrix Comparable to Autogenous Tissue for Root Coverage?

Methods: Collagen matrix used with a coronally advanced flap was compared to a connective tissue graft used with a coronally advanced flap at 6 months and 5 years for root coverage achieved. Results: Seventeen patients were available for the 5-year recall. Mean root coverage between 6 months and 5 years changed from 89.5% to 77.6% […]

Does Suture Removal Time Affect Root Coverage Outcome?

Methods: A meta-analysis of randomized clinical trials that assessed single tooth class I or II recession defects treated surgically with a coronally advanced flap. Early (less than 10 days post-op) and late (more than 10 days post-op) suture removal were compared in terms of differences in complete root coverage outcome. Results: Data from seventeen studies […]

Does platform switching allow closer implant placement?

METHODS: Marginal bone levels and tissue quality was evaluated after 2 months of healing for 72 implant sites in 12 pig mandibles. The interimplant distance was either 2 mm or 3 mm. RESULTS: No difference was seen when the interimplant distance was 2 mm or 3 mm in terms of interproximal bone loss. CONCLUSIONS: Platform […]

Are Results for Enamel Matrix Derivative (Emdogain) comparable to Connective Tissue Grafting at 10 years?

METHODS: 10 years after the original surgery for gingival recession, 10 of 17 patients were returned for follow-up evaluation. Among the parameters measured at 10 years: Percent root coverage, gingival recession depth, probing depths , width of keratinized tissue and clinical attachment levels. RESULTS: No difference between Emdogain and Coronally Advanced Flap when compared to […]