Clinical Performance of Dentals Implants With Hydrophilic or Hydrophobic Surfaces

• Hydrophilic surface implants (Device), also known as Neodent Helix Grand Morse® Acqua: A dental implant with hydrophilic surface will be placed and restored in single-tooh gaps of the posterior region of the mandible or maxilla.
• Hydrophobic surface implants (Device), also known as Neodent Helix Grand Morse® Neoporos: A dental implant with hydrophobic surface will be placed and restored in single-tooh gaps of the posterior region of the mandible or maxilla.

Primary outcomes

• Change of implant stability [10 time-points will be considered and divided in two phases: surgical and prosthetic. The last measure will occur 1 year after the placement of the definitive implant restoration.]: Implant stability was set as the primary outcome. The implant stability quotient (ISQ) will be measured using a portable device called Osstell ISQ (Osstell Mentor, Integration Diagnostics, Göteborg, Sweden).

Secondary outcomes

• Implant success [Assessed at the 12-month follow-up visit.]: Each implant will be assessed according to the health scale of the International Congress of Oral Implantologists (ICOI-Pisa health scale). After clinical assessment, each implant will be classified as 'success', 'satisfactory survival', 'compromised survival' or 'failure'.
• Periimplant bone level [Radiographs will be obtained at 4 time points: immediately after implant placement, at the session of the provisional prosthesis installation, and at the 6 and 12-month follow-up visits after the delivery of the definitive prosthesis.]: Periapical radiographs will be obtained and the periimplant bone level will be measured and compared longitudinally.
• Condition of the periimplant soft tissues [15-days, 6- and 12-month follow-up visits after delivery of the definitive prosthesis.]: The following parameters will be assessed clinically: presence/absence of bleeding on probing, probing depth, and presence/absence suppuration.

Sex: All, ages: 18 Years to any

Inclusion Criteria:

* Present single or multiple intercalated untreated tooth gaps in the posterior region of the mandible or maxilla;
* Agree to participate in the study by signing the informed consent form.

Exclusion Criteria:

* Unavailability for participation or signs that they could not comply with the schedule of follow-up visits;
* Presence of general and/or local contraindications that could prevent the surgical procedure for implant placement;
* Presence of conditions that may interfere with the prognosis, such as current treatment with bisphosphonates or report of use for less than 2 years, presence of rheumatic diseases, among others;
* Absence of the minimum bone quantity of 8 mm in length and 3.75 mm in diameter for installation of an implant in the tooth gap;
* Absence of a mesio-distal space of at least 4.6 mm in the single tooth gap required to place the surgical guide;
* Do not present a mouth opening of at least 12mm required for the proper of the guided surgical kit together with the surgical guide;
* Do not present a band of keratinized tissue favorable for maintaining peri-implant health.
* Present motor difficulties that compromise adequate oral hygiene.