Dental Asia March/April 2022

USER REPORT
upper-right corner of Fig. 2. The most
apical level of the bony destruction was
about apical third-deep from the second
premolar.
From the occlusal view, in the lower left
corner of Fig. 2, the lingual bony wall was
not totally damaged, resulting in the twowall
defect within the bony architecture.
This was a good environment for the guided
bone regeneration of the newly placed
implant and guided tissue regeneration of
the second premolar.
Fig. 3
The buccal and lingual surface of the
bony support of the Second premolar
were not damaged, as observed in the
lower right corner of Fig. 2, but the root
surface was exposed in the middle of the
distal side, creating the V-shape of the
periodontal destruction.
The defect was filled with 100% Puros ®
allograft and completely covered with a
Biomend collagen membrane. The
membrane was shaped like a saddle for
complete coverage and fully seated over
the ridge. Guided bone regeneration and
guided tissue regeneration were
performed at the same surgery, the wound
was closed by 4-0 Vicryl sutures (Fig. 3).
Fig. 4 Fig. 5
FINAL RESULTS
The six-month healing process went
smoothly and no other symptoms were
noted. The periapical films showed the
radio-opaque area between the second
premolar and the dental implant (Fig. 4).
After six months, healing the regenerated
bone filled the defect between the
second premolar and dental implant.
No remaining bone particles were seen.
All rough surface was fully covered by the
alveolar bone without exposed threads.
The clinical photos and periapical films
(Figs. 4-7) showed the differences before
and after the treatment. The alveolar
bone was regenerated. The patient
accepted another implant and the
regenerated bone was still in good
condition five years after the treatment. DA
Fig. 6 Fig. 7
ABOUT THE AUTHOR
Dr Hsu received his B.D.S degree from
the Taipei Medical University (TMU)
in Taiwan in 2000 and MS degree
from the National Defense Medical
College in Taipei, Taiwan, in 2004. He
currently teaches periodontology and
implant dentistry in the undergraduate
and graduate programme at National
Defense Medical College, and was
appointed head of dental department
at E.C.K. Hospital from 2010-2012
and Taiwan Adventist’s Hospital from
2014-2017. Dr Hsu was the president of
Taiwan Academy of Osseointegration
from 2016-2018 and the president of
TMU Dental Taipei Alumni Association
from 2018-2020. He is also the director
of Taipei dental associates from 2018
to now. He has had his own private
practice since 2018 in Taipei, Taiwan.
DENTAL ASIA MARCH / APRIL 2022 55