The effect of guided bone regeneration with coralline hydroxyapatite on gingival morphology of single implant prostheses

doi:10.3877/cma.j.issn.1674-1366.2010.02.013

Abstract

Abstract:

Objective

To study the effect of guided regenerative bone on the esthetic outcomes of peri-implant gingival tissue in the site of single tooth-loss with various extent of alveolar defect.

Methods

53 patients with single missing tooth and presenting various extent of alveolar defect were treated with standard implant surgery protocol. The guided bone regeneration procedures were performed with coralline hydroxyapatite simultaneously. The situation of bone healing and guided bone regeneration were observed. Marginal bone level around the implant shoulder， the morphology， marginal level， quality， papilla architecture， as well as the marginal bleeding of the gingiva tissue surrounding the implant prostheses were evaluated immediately after implant restoration and at 3- and 6-month follow-up respectively.

Results

The guided regenerative bone grew well and covered the defects completely. At 6-month follow-up， implant marginal bone resorption of over 1 screw was found in 4 patients， not relevant with the defect type. The gingival esthetic outcomes was improved significantly with the increase of functional loading-time； but the incidence of unmatched gingival shape and papilla architecture in the patients with larger alveolar defect is higher than the patients with smaller defect.

Conclutions

Coralline hydroxiapatite is well able to guide new bone to regenerate. Sufficient guided regenerative bone is a decisive factor for maintaining the natural gingival shape and structure around the implant.

Key words: Coralline hydroxyapatite, Bone defect, Guided bone regeneration, Gingival pattern

Xiao-wen HU, Siriguleng LI, Ling-wei LI, Cui-jun LI. The effect of guided bone regeneration with coralline hydroxyapatite on gingival morphology of single implant prostheses[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2010, 4(02): 180-188.

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Figures/Tables 10

References 14

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骨缺损类型	上颌骨（28 例）				下颌骨（25 例）
骨缺损类型	切牙	尖牙	双尖牙	磨牙	切牙	尖牙	双尖牙	磨牙
V 型（18 例）	2	1	3	3	2	2	3	2
U 型（23 例）	8	2	2	1	7	2		1
UU 型（12 例）	6				5	1
总数（53 例）	16	3	5	4	14	5	3	3

骨缺损类型	上颌骨（28 例）				下颌骨（25 例）
骨缺损类型	切牙	尖牙	双尖牙	磨牙	切牙	尖牙	双尖牙	磨牙
V 型（18 例）	2	1	3	3	2	2	3	2
U 型（23 例）	8	2	2	1	7	2		1
UU 型（12 例）	6				5	1
总数（53 例）	16	3	5	4	14	5	3	3

骨缺损类型	例数	种植修复后6 个月
V 型（18 例）	18	1
U 型（23 例）	23	2
UU 型（12 例）	12	1

骨缺损类型	例数	种植修复后6 个月
V 型（18 例）	18	1
U 型（23 例）	23	2
UU 型（12 例）	12	1

骨缺损类型	修复后即刻			修复后3 个月			修复后半年
骨缺损类型	V	U	UU	V	U	UU	V	U	UU
龈缘形态相称	8	0	0	13	6	2	17	15	3
龈缘形态基本相称	6	5	2	5	16	8	1	8	7
龈缘形态不相称	4	18	10	0	1	2	0	0	2
牙龈退缩＞ 1.5 mm	0	4	4	0	1	1	1	0	0
牙龈退缩＜ 1.5 mm	18	19	8	18	22	11	17	23	12
牙龈较厚	14	18	8	15	19	8	15	19	9
牙龈较薄	4	5	4	3	4	4	3	4	3

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