Dental procedures for alveolar bone augmentation may be carried out using autologous bone graft material derived from the patient’s own tooth. The material obtained is subjected to strict procedures aimed at reducing the amount of bacteria in the autograft. The aim of this study was the evaluation of the efficacy of the autogenous dentine matrix produced by grinding the patient’s own tooth for the augmentation of maxillary bone defects and the evaluation of the microbiological status of the material obtained. Alveolar bone repair was performed with an autogenous dentin matrix in four patients. In each case, an autogenous bone graft substitute obtained by grinding the patient’s own tooth was used. The tooth-derived material was then used for alveolar augmentation. The obtained material was tested to assess its microbiological profile. For the purpose of comparison, other materials and tissues were also subjected to microbiological testing. Bone healing was assessed by CBCT (cone beam computed tomography) scanning before and 6 months after surgery using the Hounsfield scale and the ImageJ software. Analysis of the bone regeneration process based on the bone density score in Hounsfield units showed significant differences in measurements on CBCT scans carried out on the treatment site, before surgery, and 6 months after it, using ImageJ software. All bacteria detected in the bone augmentation material constituted the patient’s bacterial flora. The microorganisms present in the augmentation material were also present in the patient’s bone and soft tissues. The use of an autogenous dentin matrix for alveolar bone repair ensures that the proper volume is obtained and that alveolar bone shape is preserved and does not introduce pathogenic microorganisms into the patient. The procedure for preparing and using an autogenous dentin matrix is described based on one clinical case.

Research related to the development of a dental infiltrant for minimally invasive treatment of initial caries of hard dental tissues is presented. The formulation of the developed infiltrant material includes typical methacrylate monomers used in dentistry, an author’s adhesion monomer containing metronidazole, a photoinitiating system and yttrium trifluoride (YF₃). The main objective of the study was to evaluate penetration into decalcified root cementum using scanning electron microscope of an experimental preparation with the characteristics of a dental infiltrant compared to a commercial preparation with the addition of YF₃ as a contrast agent. Microscopic observations showed that YF₃ particles virtually did not penetrate deep into the root cementum—this was mainly due to the particle size of YF₃. Observations of cementum and root dentin tissue infiltration: resin tissue infiltration was visible to a depth of about 80 to 120 μm without the use of a tracer, which, due to agglomeration and particle size, remained on the cementum surface or in the resin used for inlaying. There were no differences between the degree of penetration of an experimental preparation with the characteristics of a dental infiltrant, as compared to a commercial preparation.

Successful implant placement in augmented sites depends on the appropriate bone volume and quality, as well as careful planning of the procedure. Minimizing risks during the surgical and healing phases is also of great importance. A very promising technique has been introduced, which partially meets the above criteria. This technique is designed to increase the precision and reduce the invasiveness associated with surgical procedures during implantation. The aim of this clinical study was to analyze the accuracy of computer-guided implant surgery in augmented sites in patients treated with dental implants introduced using dynamic implant navigation. Eleven healthy patients who had planned and performed implant-prosthetic treatment after bone augmentation were analyzed. Twenty-three implants were placed with Navident dynamic navigation using the tissue punch flapless technique. This study evaluated the position of the inserted implant relative to the virtual plan and determined the correlation. The treatments were successful in all the treated patients, and the integration period (3 or 6 months) was uneventful and enabled implant-prosthetic treatment. The accuracy values provided in this study are comparable to, but not better than, data provided in the literature on dynamic and static computer-assisted surgery. Dynamic navigation may improve the quality and safety of surgical procedures and reduce the risk of complications.

Successful implantation in augmented areas relies on adequate bone density and quality, along with thorough planning. The minimisation of the risks involved in the surgery and recovery phases is also of tremendous relevance. The aims of the present research were to clinically and biochemically evaluate the healing process after implant surgery (dental implants) using dynamic surgical navigation following prior bone augmentation. Thirty healthy patients who had implant treatment were analysed. The study participants (30 patients) were randomised between two groups. The 15 patients in the study group were treated with Navident dynamic navigation by using a flapless technique. The control group included 15 subjects in whom the implantation procedure was performed classically using the elevation flap full-thickness method. In all cases, the patient’s clinical condition, the patient’s subjective visual assessment of post-operative pain using the Visual Analogue Scale (VAS), and the levels of the salivary biomarkers interleukin 6 (IL 6) and C-reactive protein (CRP) immediately before surgery on the first post-operative day and on the seventh post-operative day were assessed. The healing process was shown to be faster in patients in the study group due to the low invasiveness of the treatment, which was confirmed by lower levels of pro-inflammatory cytokines in the study group versus the control group. The statistical analysis used Student’s t-test and Mann–Whitney test. The implementation of dynamic navigation and the application of the flapless technique reduced post-operative trauma, leading to a reduced risk of infection, reduced patient discomfort, and faster recovery.

The aim of this study is to evaluate the depth of penetration of an experimental preparation with the characteristics of a dental infiltrant into the decalcified root cementum tissue and observation of the root cementum tissue subjected to a single and repeated twice hydrochloric acid etching process. The study material consisted of 20 human teeth (the study group—12 demineralised teeth, the control group—8 teeth). A commercially available Icon preparation and an experimental preparation were used for the study with addition 2% of YF₃ (yttrium trifluoride) added as an indicator to facilitate microscopic observation. Each tooth was divided into two zones, blue (Icon) and red (experimental preparation). The teeth were divided into two subgroups—in the first subgroup, the etching preparation was applied once, in the second subgroup twice, and at the end the teeth were infiltrated with the experimental preparation and the Icon preparation. The study of tooth longitudinal section morphology and chemical composition was performed with the use of a Hitachi S-3400N scanning electron microscope. Microscopic observations show that the applied YF₃ tracer in most cases agglomerates and remains in the form of conglomerates on the surface of the root cementum. Single particles of YF₃ are visible, penetrating through the cementum tissues into the root dentine structure. The degree of tissue infiltration with the resin (depth of penetration into decalcified tissues) is visible at a depth of approx. 80–120 μm. In the test group subjected to a single etching process, good penetration of both resins was noticeable, however, excessive erosion of the root surface was evident in several of the specimens—indicating that damage occurred as a result of the etching process. In the test group subjected to two etching processes, excessive erosion of the cementum is visible in each deposit.