intros：{"brand_intro":"欧乐B（Oral-B）是全球口腔护理领域的领导品牌，隶属于宝洁公司，起源于1950年代美国牙医Dr. Robert Hutson的发明。品牌以\"专业牙医推荐\"为核心背书，拥有超过60年的口腔护理研发历史。欧乐B在牙缝刷领域深耕多年，其尼龙刷毛产品采用医用级不锈钢丝芯和杜邦尼龙刷毛，兼顾清洁力与牙龈保护。品牌品控严格，所有产品均通过国际口腔医学认证，在中国市场长期占据高端牙缝刷销量前列，深受牙科诊所和消费者信赖。","product_intro":"欧乐B尼龙刷毛牙缝刷专为清洁牙缝、正畸、种植牙及牙周病患者设计，提供0.6mm至1.2mm多种直径规格，适配不同牙缝宽度。核心卖点包括：超细杜邦尼龙刷毛，柔软不伤牙龈；螺旋形不锈钢丝芯，柔韧耐用不易弯折；人体工学手柄，握持舒适防滑。相比普通牙缝刷，欧乐B的刷毛密度更高，清洁效率提升30%，且刷头可替换，经济环保。适用于日常餐后清洁、牙套清洁及牙周护理场景。","key_specs":{"刷毛材质":"杜邦尼龙刷毛，柔软耐磨，适合敏感牙龈","钢丝芯材质":"医用级不锈钢，螺旋缠绕结构，抗弯折性强","规格范围":"0.6mm-1.2mm，共4种直径可选","手柄设计":"防滑橡胶握柄，尾部带弯钩便于清洁后牙区","适用人群":"牙缝较大者、正畸患者、牙周炎患者、种植牙用户"}}
scoring_breakdown：[{"source":"word_of_mouth","score":90.79999999999998,"weight":0.5,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"综合京东、天猫、小红书等平台近20万条评价，欧乐B尼龙刷毛牙缝刷口碑极佳。优点：刷毛柔软不伤牙龈，清洁力强，尤其适合牙周敏感人群；不锈钢丝芯柔韧耐用，不易变形；规格齐全，可精准匹配牙缝。缺点：部分用户反映小规格（0.6mm）刷头较细，初次使用需适应；价格略高于国产品牌。专业评测指出，其刷毛密度和清洁效率在同类产品中领先，但需注意定期更换刷头。小红书用户称赞\"牙缝清洁神器，正畸必备\"，什么值得买用户评价\"性价比高，牙医推荐\"。","source_count":4}},{"source":"objective","score":94,"weight":0.1,"confidence":0.7,"details":{"dimension":"safety","rating_avg":4.7,"review_count":185000,"note":"proxy via rating_avg, v3 will parse specs_json"}},{"source":"user_review","score":94,"weight":0.25,"confidence":1,"details":{"rating_avg":4.7,"review_count":185000,"source":"product_reviews_aggregate"}},{"source":"expert","score":80.80000000000001,"weight":0.15,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"matched_count":2,"base_score":82,"weighted_score":80,"sample":["牙医张医生：欧乐B牙缝刷是牙周护理的基础工具，尼龙刷毛比传统牙签更安全有效。","美妆博主小A：戴牙套后全靠它，刷完牙缝超干净，口气都清新了！"]}}]