“…Bearing in mind the higher risk of contamination of ambulatory surgical areas, above all during long surgeries (sinus lift, several implant placing, guided bone regeneration (GBR)) and in medically compromised patients, we cannot exclude that a part of implant failures is the result of a chain of personnel latent errors, including some improper antiseptic measures (not surgical hand hygiene, unsterile gloves, improper use of mask, contamination of operating surface or room air, unsterile barrier covering, lack of surgical guide disinfection and mouth rinses, suture contamination by perioral skin bacteria, among others), as far as untrained professional practice [17,41,42,44,126].…”