6th Edition of International Conference on Dentistry
and Oral Health

August 11-13, 2022

August 11-13, 2022 | Online Event
ICDO 2022

Self-Inflating Soft Tissue Expander Outcome for Alveolar Ridge Augmentation A Randomized Controlled Clinical and Histological Study

Alaa talaat ali, Speaker at Dental conference 2022
Assiut University, Egypt
Title: Self-Inflating Soft Tissue Expander Outcome for Alveolar Ridge Augmentation A Randomized Controlled Clinical and Histological Study

Abstract:

OBJECTIVE
Severe alveolar bone resorption is usually associated with a deficient amount of soft tissues. soft tissue
expansion is introduced to provide an adequate amount of soft tissue over the grafted area. This study
aimed to assess the efficacy of sub-periosteal self-inflating osmotic tissue expanders used as
preparatory surgery before horizontal alveolar ridge augmentation using autogenous onlay block
bone graft.

METHODS
A prospective randomized controlled clinical trial was performed. Sixteen partially edentulous patients
demanding horizontal bone augmentation in the anterior maxilla were randomly assigned to
horizontal ridge augmentation with autogenous bone block grafts harvested from the mandibular
symphysis. For the test group, soft tissue expanders were placed sub-periosteally before horizontal
ridge augmentation. Impressions were taken before and after STE, the cast models were optically
scanned and superimposed to be used for volumetric analysis. Horizontal ridge augmentation was
carried out after STE completion. For the control group, a periosteal releasing incision was performed
during bone augmentation procedures. Implants were placed in both groups at re-entry surgery after
six months period. A core biopsy was taken. Histomorphometric assessment for newly formed bone
surface area, mature collagen area fraction, the osteoblasts count, blood vessel count were
performed. The change in alveolar ridge width was evaluated through bone caliper and CBCT.

RESULTS
Soft tissue expander successfully provides a Surplus amount of soft tissues in 5 out of 8 patients in the
test group. Complications during the expansion period were perforation through oral mucosa
occurred in two patients. Infection occurred in one patient The mean soft tissue volume gain was
393.9 ± 322mm. After 6 months. The mean horizontal bone gains for test and control groups were
3.14 mm and 3.69 mm, respectively.

CONCLUSION
STE with a sub-periosteal approach is an applicable method to achieve an additional soft tissue and
to reduce bone block graft exposure and wound dehiscence

Watsapp