拜拜的英文位点保存技术英文及翻译

Ridge Preservation of the Molar ExtractionSocket Using Collagen Sponge

and Xenogeneic Bone Grafts

Young-Kyun

Kim,

DDS,

PhD,*

Pil- Young

Yun,

DDS,

PhD,

?

Hyo-Jung

Lee,

DDS,

PhD,

?

Ji-YeonAhn,

DDS,

§

and Su-Gwan Kim, DDS, PhD

I

t has been reported that the resorptionof the residual alveolar bone inthe vicinity of extraction

sockets

occursprimarily

during

the

initial

periodafter

tooth

extraction,

and

in

cases

withteeth

infected

with

periodontal

diseases,it

shows

more

widely.

1,2

Chen

et

al,

3

andSchropp

et

al

4

have

reported that 6 to 12months after tooth extraction, 0.34 to 7.7mm horizontal and 0.2 to 3.25 mm

verticalbone loss occurs, and bone resorptionoccurs most abundantly during theinitial 3 months.

The

progression

of

bone

resorptionafter

extraction

renders

the

placementof

implant

difficult

or

inducesthe difficulty of manufacturing prosthesisin the future and the managementof oral hygiene

in

the

vicinity

ofimplants.

Therefore,

by

applying

diversemethods,

efforts

have

been

madeto

preserve

the

alveolar

ridge

and

toprevent

bone

resorption.

It

has

beenreported

that

bone

substitution materialssuch as HTR, BioOss, DFDBA,Bioglass,Hydroxyapatite, and materialssuch

as

collagen,

polylactide,

andpolyglycolide

sponge

were

used

aloneor

in

combination,

and

the

resorptionof the alveolar bone was less.

Darby et al

10

reported that it ismore preferable to perform ridge preservationin the area where the

thicknessof

the

buccal

bone

plate

is

lessthan

1.5

to

2

mm.

Cases

in

whichseveral

teeth

wereextracted,

major

anatomicalstructures

such

as

the

maxillarysinus

and

mandibular

canal

werelocated in the adjacent area, the arearequiring high aesthetics.

On

the

other

hand,

the

negativeopinion

on

alveolar

preservation

techniquewas

also

presented.

Rothameletal

11

have

reported

in

a

study

on

thesocket

preservation

usingnanocrystallinehydroxyapatite paste that due to theunpredictable resorption of materials,the

effect of alveolar ridge preservationtechnique was not useful. Becker et al

12

and Pinholt et al

13

have

reported

that

incases

that

grafted

bone

substitution

materialsto

extraction

sockets,

graft

materialsmay

impede

the

normal

healingprocess

of

the

extraction

socket

itself

orthe

extraction

socket

with

implant

placement,

and

thus

suggested

that

graftingimplant

materials

to

fresh

extractionsocket

causes

problems.

The

purpose

ofthis

study

was

to

evaluate

the

efficacy

ofthe

alveolar ridge preservation techniqueusing collagen sponge and xenograftafter extraction.

Objective:

The

purpose

of

thisstudy

was

to

evaluate

the

efficacy

ofthe

alveolar

ridgepreservation techniqueusing collagen sponge andxenograft after extraction.

Study Design:

Twenty patientswere divided into the control group andthe experimental group,

which containedabout 10 patients each. The controlgroup patients were planned 3-unitbridge

without performing implant andwithout special treatments for the extraction

socket, and prosthetic treatmentswere performed after

3 months. Inthe

experimental group,

using collagensponge and xenogeneic bone graft, alveolarridge preservation was performed

simultaneously

with

tooth

extraction;implants

were

placed

after

3

al

and

histological evaluationsand statistical analysis were performed.

Results:

The resorption rate of thewidth of alveolar bone 3 mm belowthe alveolar ridge of the

control groupwas shown to be 20.74% and of theexperimental group was an average of

14.26%,

approximately

a

difference

of6%

was

observed,

and

it

was

statisticallysignificant.