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相關Laser-Lok3.0植體學術文章：
Immediate versus Delayed Treatment in the Anterior Maxilla Using Single Implants with a Laser-Microtextured Collar: 3-Year Results of a Case Series on Hard- and Soft-Tissue Response and Esthetics

在上顎前牙區使用單顆有Laser-lok微溝槽植體作立即和延遲治療的比較：3年後的軟硬組織反應及美學結果探討

Renzo Guarnieri, MD, DDS,

Fabrizio Belleggia, DDS,

& Maurizio Grande, DDS

出處：Journal of Prosthodontics 25 (2016) 135–145 C _ 2015 by the American College of Prosthodontists

摘要：
ABSTRACT

目的：
Purpose

To compare peri-implant marginal bone loss, soft tissue response, and esthetics following single immediate implant treatment (IIT) and delayed implant treatment (DIT) in the esthetic zone of the maxilla in well-selected patients.

在挑選過的患者中，於上顎的美觀區作單顆植牙的立即治療(IIT)和延遲治療(DIT)，並追蹤植體周圍的骨流失、軟組織反應和美觀等結果來作比較。

材料跟方法：
Materials and Methods

Adequate bone volume and ideal soft tissue level/contour were considered requirements for implant therapy, with additional prerequisites for IIT of residual alveolar bone wall integrity and a thick gingival biotype. IIT included immediate placement and provisionalization, while DIT included extraction socket preservation followed by implant placement and provisionalization 4 months later.Cortical bone levels and peri-implant mucosal conditions were evaluated at regular intervals. The esthetic outcome was objectively rated after 3 years using the pink esthetic score (PES) and white esthetic score (WES).植牙治療先決的條件需有足夠的骨量和軟組織的水平和輪廓，而在額外的條件下，立即治療(IIT)則需具有殘留牙槽骨壁的完整性和厚的牙齦型態。IIT包括立即植牙和臨時假牙的裝置。DIT包含拔牙窩的保存，並依循四個月後植入植體和臨時假牙的裝置。定期評估皮質骨的水平和植體周圍黏膜的狀況。3年後使用粉紅美學標準(PES)和白色美學標準(WES)來評分。植體品牌

Figure 2 Example of IIT. (A) clinical situation; (B) facial view of the extraction socket; (C) buccal view of the extraction socket; (D) implant placement;(E) facial views of immediate interim prosthesis; (F) facial views of interim crown after 4 months (G) facial views of tissue at definitive restoration delivery; (H) buccal views of tissue at definitive restoration delivery; and (I) facial views of definitive restoration after 3 years.

結果：
Results

Twelve patients received an immediate Laser-Lok _ implant, and 13 patients received a delayed Laser-Lok _ implant. No significant differences were found between the study groups regarding survival rate (100%). The mean bone level from the implant/abutment interface was 0.35 ± 0.18 mm for IIT and 0.42 ± 0.21 mm for DIT after 3 years (p > 0.05). Mesial and distal papillae remained stable over time in DIT. A tendency for regrowth of mesial and distal papillae was found following IIT(p < 0.05). Midfacial soft tissues remained stable over time following DIT and IIT.

12名患者接受立即植入Laser-lok的植體，另13名患者接受延遲植入Laser-lok的植體。在研究組之間並無存活率(100%)的顯著差異。兩者三年後，IIT的齒槽脊平均距離implant/abutment為0.35 ± 0.18 mm；DIT的齒槽脊平均距離implant/abutment為0.42 ± 0.21 mm，(p > 0.05)。在DIT中，近心和遠心的papillae隨時間仍保持穩定。在IIT近心和遠心的papillae則可發現再生的趨勢(p < 0.05)。追蹤DIT 和 IIT的頰側軟組織隨時間推移仍保持穩定。

Figure 4 Example of DIT. (A) clinical situation; (B) buccal view of the extraction socket; (C) graft material positioned in the extraction socket; (D)tissue healing after 4 months; (E) implant placement; (F) facial views of interim prosthesis 1 month later; (G) facial views of tissue at the delivery of definitive restoration; (H) buccal views of tissue at the delivery of definitive restoration; and (I) facial view of restored implant after 3 years.

結論：
Conclusions Within the limitations of this study (e.g., small sample size, short follow-up duration), the results suggest that regarding success rate, hard/soft tissue responses, and esthetics, DIT and IIT with single Laser-Lok R _ implants in the anterior maxilla are comparable and predictable options for well-selected patients.在有限的研究範圍內(例如：小樣本量，短時間的持續追蹤)所得結果建議，對於口腔條件佳的病患，利用Laser-lok植體，在上顎前牙區作單科植牙，不論DIT和IIT，對於成功率、美學結果、和軟硬組織的反應，都比較能得到可預測的結果。