Bone Deficiency, Posterior Maxillae
Conditions
Keywords
Bone, Maxilla, Cone-Beam Computed Tomography, Regeneration
Brief summary
Overcoming the vertical and horizontal bone deficiency in the posterior maxillae are considered as the most challenging scenarios for implant-supported oral rehabilitation in modern implant dentistry. Therefore, a comprehensive and precise understanding of such anatomical structures are needed to avoid potential complications that ultimately might jeopardize the treatment outcome. Cone-beam computerized tomography (CBCT) offers some advantages to conventional CT-scan such as lower-dose radiation with high isotropic spatial resolution and cost. Therefore, it offers a viable and reliable tool to study anatomical structures such as the posterior atrophic maxillae
Interventions
RADIATIONCone-beam computed topography
This study used a retrospective database of preexisting data that included patients treated as part of routine periodontal and oral surgery therapy for each patient's needs. All the patients signed an inform consent approving using their radiographic data for research purposes.
Sponsors
Center of Implantology, Oral and Maxillofacial Surgery, Badajoz, Spain
Study design
Observational model
COHORT
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
Yes
Inclusion criteria
* Images were included if: 1. Pristine maxillary posterior atrophic ridges (between premolars and molars) as a result of missing single or multiple teeth for over than 12 months. 2. Residual ridge height (RH) was \< 10 mm. 3. Presence of teeth adjacent to or opposing the edentulous area so the location of the edentulous ridges corresponding to the tooth site could be identified. 4. The maxillary sinus to be measured was visible from its floor to at least 15 mm from the alveolar crest of the edentulous ridge. * Images were excluded if: 1. Images were unclear or incomplete due to scattering or other reasons 2. Edentulous ridge height was more than 10 mm 3. Ridge preservation/augmentation simultaneous/delayed to tooth extractions 4. Grafted maxillary sinus for implant-supported prosthesis 5. The location of the edentulous ridge cannot be determined 6. Implants or other prosthetic device restoring the posterior ridge 7. Presence of sinus pathology that made the measurement impossible 8. The outline of the edentulous ridge cannot be identified due to low 'grey scale' density
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Lateral Wall Thickness | One month | Thickness measured in mm of the lateral aspect of the maxillary sinus |
Countries
Spain
Participant flow
Participants by arm
| Arm | Count |
|---|---|
| Consecutive Individuals Consecutive individuals explored via cone-beam computed tomography to evaluate the anatomical features | 180 |
| Total | 180 |
Baseline characteristics
| Characteristic | Consecutive Individuals |
|---|---|
| Age, Categorical <=18 years | 20 Participants |
| Age, Categorical >=65 years | 50 Participants |
| Age, Categorical Between 18 and 65 years | 110 Participants |
| Age, Continuous | 57 years STANDARD_DEVIATION 9 |
| Region of Enrollment Spain | 180 participants |
| Sex: Female, Male Female | 80 Participants |
| Sex: Female, Male Male | 100 Participants |
Adverse events
| Event type | EG000 affected / at risk |
|---|---|
| deaths Total, all-cause mortality | — / — |
| other Total, other adverse events | 0 / 0 |
| serious Total, serious adverse events | 0 / 0 |
Outcome results
Primary
Lateral Wall Thickness
Thickness measured in mm of the lateral aspect of the maxillary sinus
Time frame: One month
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Consecutive Individuals | Lateral Wall Thickness | 161 mm | Standard Deviation 11 |