Immediate placement and provisionalization of maxillary anterior single implants: 1-year prospective study

PURPOSE: This 1-year prospective study evaluated the implant success rate, peri-implant tissue response, and esthetic outcome of immediately placed and provisionalized maxillary anterior single implants. MATERIALS AND METHODS: Thirty-five patients (8 men, 27 women) with a mean age of 36.5 years (range 18 to 65) were included in this study. Thirty-five threaded, hydroxyapatite-coated implants were placed and provisionalized immediately after each failing tooth had been removed. The definitive restoration was placed 6 months later. The patients were evaluated clinically and radiographically at implant placement and at 3, 6, and 12 months after implant placement. RESULTS: At 12 months, all implants remained osseointegrated. The mean marginal bone change from the time of implant placement to 12 months was -0.26 +/- 0.40 mm mesially and -0.22 +/- 0.28 mm distally. No significant differences in the Plaque Index scores were noted at different time intervals. The mean midfacial gingival level and mesial and distal papilla level changes from pretreatment to 12 months were -0.55 +/- 0.53 mm, -0.53 +/- 0.39 mm, and -0.39 +/- 0.40 mm, respectively. All patients were very satisfied with the esthetic outcome and none had noticed any changes at the gingival level. DISCUSSION: Although marginal bone and gingival level changes were statistically significant from pretreatment to 12 months of follow-up, they were well within clinical expectations. CONCLUSION: The results of this study suggest that favorable implant success rates, peri-implant tissue responses, and esthetic outcomes can be achieved with immediately placed and provisionalized maxillary anterior single implants.     

上颌单颗前牙不翻瓣即刻种植的临床应用研究

目的：研究上颌单颗前牙不翻瓣即刻种植的短期临床效果。方法：17例上颌单颗前牙微创拔除后不翻瓣即刻植入种植体,经软组织塑形后,完成最终上部结构。随访3-9个月,对种植体周围软硬组织进行评价。结果：17例种植体均获得良好骨结合,种植体无松动脱落。种植体周围软硬组织状态良好,美学效果满意。结论：上颌单颗前牙不翻瓣即刻种植短期内可获得较满意的临床效果。     

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前牙承担着维持面部美观和语音的重要功能,前牙缺失后采取即刻牙种植历来受到学者的关注.由于前牙位置、功能和局部解剖、组织结构的特殊性,如何兼顾或取舍相关功能,正确选择不同的牙种植体,修复缺失前牙,修复重建并维持骨和牙龈组织,提高即刻种植远期成功率,是前牙即刻种植治疗实施前必须认真思考的.本文在回顾近年相关文献报道的基础上,总结、分析了影响前牙即刻种植的主要因素,探讨了治疗中应该注意的主要问题.     

上颌单颗前牙不翻瓣即刻种植修复的临床效果观察

目的 评价即刻种植即刻修复联合不翻瓣技术在上颌单颗前牙位点的临床应用效果,并探讨其技术要点.方法 选择上颌单颗中切牙无法保留的患者17例,采用不翻瓣技术,拔除患牙后即刻植入种植体,并即刻行种植体支持临时冠修复,术后2个月复诊调整临时冠外形,术后3个月行最终修复.最终修复后1、3、6、12、24个月复诊.最终修复即刻、1...     

Immediate placement of implant into impacted maxillary canine extraction socket

Impaction of a maxillary canine is common. Orthodontic realignment is not always the therapy of choice. Instead, the impacted tooth can be extracted and replaced by an implant. The replacement of a single tooth with an implant in the anterior maxilla is a topic of interest for clinicians because of its esthetic implications, mostly when immediate loading has been planned. This article describes a clinical case in which an impacted maxillary canine was replaced by an immediately restored osseointegrated implant. A 21-year-old woman with a palatally impacted maxillary canine and the corresponding primary tooth still remaining in the arch was treated. Both the primary and permanent teeth were surgically extracted. A conical-shaped blasted implant was immediately placed into the socket of the primary canine. A self-contained osseous defect remained on the palatal aspect and was filled with bovine bone mineral. The implant achieved excellent primary stability, so it was immediately restored with a provisional acrylic resin crown in light centric occlusion. After 6 months, the definitive metal-ceramic crown was placed. The therapy provided an excellent esthetic result, maintaining ideal soft tissue contours and papillary height. No signs of radiolucency were visible at the 1-year evaluation. The case presented supports the use of single implants for the replacement of extracted primary teeth, especially in areas where esthetics is a high priority. Furthermore, because the prosthetic restoration was done immediately, the overall time needed to restore the patient was considerably reduced in comparison with the time required for the conventional approach.     

Immediate placement of implants in extraction sites of maxillary impacted canines

BACKGROUND: Treatment of asymptomatic impacted maxillary canines in adults is inevitable when primary canine becomes lost through extraction or exfoliation or when the impacted tooth becomes symptomatic. Treatment alternatives include an orthodontic procedure to bring the unerupted tooth to the dental arch or prosthetic replacement of the missing tooth. The authors describe an alternative treatment that involves immediate placement of implants into extraction sockets of the teeth. CASE DESCRIPTION: A patient with bilateral palatally impacted upper canines chose to have the unerupted teeth removed and replaced with implants and crowns. Two hydroxyapatite cylindrical implants were inserted through the alveolar ridge into the extraction sites. The unfilled areas in the extraction sites, around the dental implants, were packed and covered with demineralized freeze-dried bone allograft in conjunction with a collagen membrane barrier. Six months after implantation, computed tomography revealed complete osseous fill of the extraction defects and no bone loss around the implants. The implants were uncovered, and porcelain-fused-to-metal restorations were fabricated and placed. CLINICAL IMPLICATIONS: This treatment modality avoids the need for conventional preparation of teeth as part of prosthetic reconstruction or prolonged orthodontic treatment aimed at bringing the impacted canine to the dental arch. Combining the implantation with bone augmentation preserved the alveolar bone and shortened the treatment period.     

Immediate implant placement and provisionalization after long-axis root fracture and complete loss of the facial bony lamella

The aim of this research was to explore the performance of a flapless surgical approach for immediate implant placement, simultaneous alveolar ridge augmentation, and immediate provisionalization in patients with complete loss of the facial bony lamella resulting from long-axis root fracture. Eighteen NobelPerfect implants were placed in 16 patients (follow-up, 13 to 36 months) who had sustained complete loss of the facial bony lamellae. Implants were inserted simultaneous to subperiostal bone augmentation with autogenous bone chips and underwent immediate provisionalization. Outcome variables included implant success, marginal bone levels, and pink esthetic score (PES). All implants achieved excellent primary stability. There were no implant losses. On average, interproximal marginal bone levels stabilized at 1.0 to 1.3 mm above the first thread. Postoperative cone beam computed tomography scans were available for 16 implant sites and confirmed restoration of the facial lamella in the vast majority of patients. Marginal esthetics, as assessed by the PES, was by and large preserved (mean postoperative PES, 12.5). Oral hygiene was highly predictive for the esthetic result. Survival rates, marginal bone levels, and esthetic results suggest a proof-of-principle for the new flapless immediate implant placement technique in patients with complete loss of the facial bony lamella. Oral hygiene status may be considered as a negative prognostic factor for the esthetic outcome.     

Immediate flapless implant placement and provisionalization: challenge for optimum esthetics and function: a case report

This report presents a case of tooth extraction and immediate flapless implant placement followed by fabrication of transitional restoration. The tooth was extracted atraumatically with the use of a periotome followed by careful debridement. An osteotomy was performed up to 5 mm beyond the base of the socket and depth using the alveolar crest as a landmark, following a slightly palatal direction. The implant shoulder was inserted 3 mm below the cementoenamel junction of the adjacent tooth. The interproximal distance from the neighboring teeth was 3 mm. No membranes and/or grafts were used. Initial impressions were taken immediately after implant placement; 6 hours later a well-polished and slightly overcontoured (at the distal-mesial aspect) acrylic crown was fixed onto the implant. There were no contacts in the centric and lateral positions. Five months later, the occlusion was modified allowing slight contacts in the centric position for an additional 2 months. The final prosthetic restoration was placed 2 months later (7 months after surgery), consisting of a full ceramic crown cemented on a customized metal ceramic UCLA abutment. The technique maintained the integrity of hard and soft tissues and created a very favorable esthetic result. It also provided the patient with a transitional fixed restoration and reduced the time required for therapy completion. Because research on this field is limited, further investigation is required to support the results of this report, despite the promising clinical outcome.     

Immediate custom implant provisionalization: a prosthetic technique.

Surgical and restorative techniques that can reduce the loss of hard and soft tissues that often accompany implant placement are desirable. The use of a customized provisional restoration will provide a mechanism to assist the clinician in achieving the preservation of hard and soft tissue. This article will explore clinical scenarios in which the fabrication of an immediate, customized provisional abutment and restoration can be utilized to guide tissue healing and improve the aesthetics of implant restorations. This article will focus on the use of a provisional restoration after traditional healing.