Labial Gingival and Osseous Thickness of Upper and Lower Incisors in Thick and Thin Biotypes
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 30
- 试验地点
- 2
- 主要终点
- compare between maxilla and mandibular biotype measured with the periodontal probe
研究概览
简要总结
This clinical study consists on taking 2 different records of the upper and lower incisors area : 1) a perpendicular x-ray and 2) an ultrasonic measurement of gingival thickness on the labial plate. Both measurements are used in order to measure gingival and bone thickness.
The aim was to verify the reliability of the tissue measurements of an ultrasonic technique compared with the radiographic technique and to verify whether the biotype has correlation between the maxillary and mandibular biotype in the same patient.
详细描述
The examination of the patients included:
- One color photograph of the upper and lower incisors complex with the periodontal probe introduced on the gingival sulcus
- Gingival thickness of the most protruded upper and lower incisors was measured with the biometric scanner PIROP. A lip expander was placed and clorhexidine gel was applied on top of the ultrasonic head for better wave conduction. Measurements were taken 10 times at the same point and a mean measurement was obtained.
- A tangential radiograph was taken on each patient perpendicular to the axis of the crown of the central upper and lower incisors with a periapical film holding system, and a metal strip (5mm x 1mm x 0,1mm) placed labial to the keratinized gingiva following the inclination of the incisor. A lip expander was used to keep the lips from touching the metal strip. Air was blown over the attached gingiva before placing the metal strip. The metal strip was placed along the long axis of the most protruded lower incisor crown.
All patients were evaluated and categorized in one of three possible categories: A1 (7 patients, 23,3%), A2 (12 patients, 40%), and B (11 patients, 36,7%). The patients were assigned into each category by two examiners, according to the visual and clinical aspect of the keratinized gingiva in the lower incisors. Group A1 and A2 both had thin keratinized gingiva and differed in width (group A1 comprised values ≤2mm, and group A2 had width values >2mm of keratinized gingiva). Group B comprised thick and wide keratinized gingiva. Width of gingiva was measured with a periodontal probe. Thickness of gingiva was assessed by probe transparency, where the examiner determined whether the periodontal probe was visible through the marginal soft tissue.
Radiographic measurements
Radiographs were scanned at a 1:1 scale. Scanned images were saved in JPEG format. Millimetric measurements were made using the Adobe Photoshop program to a 0.1mm precision. Four measurements were taken on each radiograph:
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •aged 18 years or older,
- •presence of all lower incisors
- •good periodontal health without bone loss or gingival inflammation
- •no dental compensations of skeletal malocclusion
- •crowding of less than 4mm
- •no history of dental or traumatic lesions in lower incisors
排除标准
- •gingival inflammation
- •daily smokers
- •patients taking drugs that causes gingival inflammation
结局指标
主要结局
compare between maxilla and mandibular biotype measured with the periodontal probe
时间窗: 1 day
Classify all patients into one of the three established categories (A1, A2, B) with the aid of a periodontal probe, and compare within the same patient if the biotype of maxilla and mandible is the same or it differs
次要结局
- Differences in tissue thickness according to gender(1 day)
- thickness biotype differences(1 day)
研究者
Juan Rossell
assitant professor. Doctor in medical science
Universitat Internacional de Catalunya