无牙颌患者locator附着体种植覆盖义齿修复后口腔卫生维护的纵向研究

doi:10.19723/j.issn.1671-167X.2019.01.024

Abstract

Abstract:

Objective: To investigate the oral hygiene status of edentulous patients with locator attachments implant overdentures (IOD) and to analyze the relationship among daily hygiene behavior, oral hygiene status and peri-implant diseases. Methods: Edentulous patients who received IOD treatment with locator attachments from January 2012 to May 2016 were recruited. Clinical and radiographic examinations were conducted to assess the peri-implant tissue status. Modified plaque index (mPLI), sulcus bleeding index (SBI), gingival index (GI), and probing depth (PD) were recorded and peri-implant marginal bone loss (MBL) was measured using paralleling projection technique. Patients’ peri-implant oral hygiene maintainence habits were investigated. The correlation between peri-implant diseases and oral hygiene status and behaviors was analyzed. Results: Fifty patients (125 implants) with an average follow-up time of 22 months (6-54 months) were enrolled. The mean values of mPLI, SBI, and GI were 1.4±1.2, 0.8±0.7, and 0.7±0.6, respectively. Average PD was (2.2±0.7) mm. Mesial and distal maginal bone resorptions were (1.1±1.1) mm and (0.9±0.9) mm, respectively. The prevalance of mucositis and peri-implantitis of the implants were 49.6% and 0. The prevelance of mucositis in the patients with poor oral hygiene (mPLI≥2) was 11.9 times as much as that of those with adequate oral hygiene (mPLI<1). The patients who performed oral hygiene procedure on attachments at least twice a day achieved much lower mPLI scores than those who cleaned less than twice a day. Conclusion: Oral hygiene condition in the group of patients with implant overdentures was poor, and it contributed to increased risk of peri-implant mucositis. The prevelance of musositis of the paitients with poor oral hygiene was 11.9 times as much as that of those with proper oral hygiene. Patients wearing IOD should pay more attention to the hygiene of the attachments.

Key words: Edentulous jaw, Dental implants, Locator attachments, Oral hygiene

CLC Number:

R783.4

Xiao-qian LIU,Qiu-wen CHEN,Hai-lan FENG,Bing WANG,Jian QU,Zhen SUN,Mo-di HENG,Shao-xia PAN. Oral hygiene maintenance of locator attachments implant overdentures in edentulous population: A longitudinal study[J].Journal of Peking University(Health Sciences), 2019, 51(1): 136-144.

Figures/Tables 7

Table 1

Table 2

Figure 1

Table 3

Modified plaque index for different age groups"

Age group	Modified plaque index ( $x ?$ ±s)
<60 years old (n=11)	1.2±1.2
60-70 years old (n=22)	1.4±1.1
70-80 years old (n=13)	1.4±1.0
≥ 80 years old (n=4)	2.3±0.5

Table 3

Figure 2

Table 4

Figure 3

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Diagnosis	n (%)
Edentulous mandible and maxila	24 (48)
Partially edentulous maxilla and edentulous mandible	17 (34)
Partially edentulous maxilla and mandible	1 (2)
Complete dentition of maxilla and edentulous mandible	8 (16)
Total	50 (100)

Clinical indicators	Mean±standard deviation
Modified plaque index	1.4±1.2
Sulcus bleeding index	0.8±0.7
Gingival index	0.7±0.6
Probing depth/mm	2.2±0.7
Buccal keratinized mucosa index/mm	3.2±1.4
Lingual keratinized mucosa index/mm	2.1±1.2

Factors	Number of implants	Healthy mucosa	Per-implant mucositis	Peri-implantitis
Main cause of tooth loss Periodontitis Non-periodontitis	86 39	39 (45.3%) 24 (61.5%)	47 (54.7%) 15 (38.5%)	0 0
Jaw grouping Full edentulous jaw Non-full edentulous jaw	70 55	40 (57.1%) 23 (41.8%)	30 (42.9%) 32 (58.2%)	0 0
mPLI grouping Bad General Good	37 32 56	3 (8.1%)^* 8 (25.0%) 52 (92.9%)	34 (81.9%)^* 24 (75.0%) 4 (7.1%)	0 0 0
Follow-up time after restoring Above 48 months 36-48 months 24-36 months 12-24 months 6-12 months	4 4 23 55 39	0 (0) 2 (50.0%) 17 (73.9%) 19 (34.5%)^# 25 (56.8%)	4 (100.0%) 2 (50.0%) 6 (26.1%) 36 (65.4%) 14 (43.2%)	0 0 0 0 0
Brand of the implant Straumann Bego	65 60	25 (38.5%) 38 (63.3%)	40 (61.5%) 22 (36.7%)	0 0
Implant level Bone level Soft tissue level	82 43	46 (56.1%) 17 (39.5%)	36 (43.9%) 26 (60.5%)	0 0
Smoking Yes No	12 113	1 (8.3%)^△ 62 (54.9%)	11 (91.7%)^△ 51 (45.1%)	0 0
Diabetes Yes No	12 113	5 (41.7%) 58 (51.3%)	7 (58.3%) 55 (48.7%)	0 0

Oral hygiene maintenance of locator attachments implant overdentures in edentulous population: A longitudinal study

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