New insights on collagen structural organization and spatial distribution around dental implants: a comparison between machined and laser-treated surfaces.

"Declarations Ethics approval and consent to participateThe study was approved by the Ethical Committee of "G.d'Annunzio" Chieti-Pescara University. On October 18, 2018, number 22. Patients gave written informed consent and received information about the study protocol. The study was conducted in accordance with the principles of the Helsinki Declaration established by the World Medical Association regarding human subjects. Consent for publicationNot applicable. Competing interestsThe authors declare that they have no competing interest. Competing interests The authors declare that they have no competing interest."

"Funding This work was partially supported by a grant from the Italian Ministry of University and Research (MIUR) (‘PRIN’ 2022, project Prot. 2022MKE4AF)."

"Trial registration : This trial is registered with ClinicalTrials.gov Identifier: (Registration Number: NCT05754970). Registered 06/03/2023, retrospectively registered, https://clinicaltrials.gov/show/NCT05754970 ."