CBCT-Based Safety Distance for Implant Placement Near the Inferior Alveolar Canal

A New Concept of Safety Distance to Place Implants in the Area of the Inferior Alveolar Canal to Avoid Neurosensory Disturbance: A Retrospective CBCT Study

Status

Not yet recruiting

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT07363239

Enrollment

100

Registered

2026-01-23

Start date

2027-01-20

Completion date

2027-01-30

Last updated

2026-03-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Implants, Inferior Alveolar Approximation

Keywords

inferior alveolar nerve, implants

Brief summary

o evaluate the radiologic proximity of mandibular dental implants placed less than 2 mm from the inferior alveolar canal using cone-beam computed tomography (CBCT), and to determine the relationship between implant-canal distance and the occurrence of postoperative neurosensory disturbances.

Interventions

OTHERnerve approximation group

implants placed with distance more than 2 mm from the inferior alveolar canal

Study design

Observational model

COHORT

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

21 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

1. Age ≥ 21 years. 2. Implants placed in mandibular first/second premolar or molar positions (Froum et al., 2021). 3. Patients without neurosensory changes following implant placement and healing (Froum et al., 2021). 4. Patients with neurosensory changes after implant placement, including paresthesia, anesthesia, dysesthesia (and neuralgia where applicable) (Froum et al., 2021).

Exclusion criteria

1. Incomplete records preventing outcome ascertainment (Froum et al., 2021). 2. Refusal/unavailability of postoperative CBCT when clinically required for evaluation (Froum et al., 2021). 3. Poor-quality CBCT scans or scatter artifacts interfering with evaluation (Froum et al., 2021). 4. Contraindications for radiographs (e.g., pregnancy/breastfeeding) in cases where additional imaging would otherwise be clinically required (Froum et al., 2021). 5. Implants placed after mental foramen

Design outcomes

Primary

Measure	Time frame	Description
Neurosensory outcome	6 months	presence/absence of neurosensory changes after implant placement, classified as reported in records (none, paresthesia, anesthesia, dysesthesia, neuralgia)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 20, 2026