Alveolar bone remodeling around immediate implants placed in accordance with the extraction socket classification: a...

Area of Science:

• Dental Implantology
• Oral Surgery
• Bone Biology

Background:

• Bone remodeling after single tooth extraction is documented.
• The impact of multiple contiguous tooth extractions on immediate implant outcomes is not well understood.
• Extraction Socket Classification (ESC) is a factor in immediate implant placement.

Purpose of the Study:

• To investigate alveolar bone remodeling around immediate implants.
• To compare bone changes based on the number of contiguous teeth extracted (ESC-1, ESC-2, ESC-3).
• To evaluate bone thickness, marginal bone loss (MBL), and bone-to-implant contact (BIC) using microcomputed tomography.

Main Methods:

• 10 beagle dogs underwent atraumatic tooth extractions.
• Sites were categorized into ESC-1 (single), ESC-2 (two contiguous), and ESC-3 (more than two contiguous) extractions.
• Immediate implants were placed, and jaw segments were analyzed for bone parameters via microcomputed tomography.

Main Results:

• ESC-3 sites showed significantly compromised buccal bone thickness and increased MBL compared to ESC-1 and ESC-2.
• Bone-to-implant contact (BIC) was significantly higher in ESC-1 compared to ESC-2 and ESC-3.
• No significant differences in bone parameters were observed between the maxilla and mandible, nor on the lingual aspect.

Conclusions:

• Buccal bone remodeling is more pronounced around immediate implants in multiple contiguous extraction sites.
• Immediate implants in single extraction sites exhibit better bone-to-implant contact.
• The findings highlight the influence of extraction patterns on immediate implant success and bone preservation.