Abstract
Statement of problem
High primary stability makes immediate loading more predictable, but immediately loaded
implants are subjected to higher stresses and strains during the healing phase than
implants that are left to heal for 3 months. Whether an earlier sensory-motor phenomenon
with an immediate loading protocol helps to reduce the risk of overloading at the
implant-bone interface is unclear.
Purpose
The purpose of this concurrent parallel design clinical study was to evaluate and
compare active tactile sensibility for a single-tooth implant opposing a natural tooth
in the mandibular posterior region with either a delayed or immediate functional loading
-protocol.
Material and methods
In this parallel group randomized trial, 2 test groups were formed: the DL group comprised
20 participants with the delayed loading protocol (loading after 3 months), and the
IL group comprised 20 participants with the immediate loading protocol (loading within
2 days). Natural tooth-to-tooth contact on the side contralateral to the implant site
(split mouth) in both test groups was used as a control to evaluate active tactile
sensibility, which was evaluated in the test and control sites of both groups by using
interocclusal articulating foils of varying thickness in maximum intercuspation. Active
tactile sensibility was compared between the DL and IL groups at 3 and 6 months of
follow-up. The nonparametric Mann-Whitney test was used for intergroup comparisons
(P=.05).
Results
A significant difference was found for 8-μm- and 12-μm-thick articulating foil at
3 months and for 8-μm-thick foil at 6 months (P<.05), indicating a difference in active tactile sensibility between the DL and IL
groups. No implant failure was recorded in this short clinical study.
Conclusions
An immediate loading protocol can be performed in implants with sufficient primary
stability. Upon loading, the IL group has shown more active tactile perception than
the DL group.
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Article info
Publication history
Published online: January 06, 2023
Publication stage
In Press Corrected ProofIdentification
Copyright
© 2022 by the Editorial Council for the Journal of Prosthetic Dentistry.
