失われた歯槽骨は自然に再生しますか？｜證據鏈

失われた歯槽骨は自然に再生しますか？｜證據鏈

F-Units（事実単位台帳）

各項目に confidence／basis／period／geo／逐語 span／caveat を記載します。basis の階層は law ＞ official_statement ＞ clinical_guideline ＞ peer_reviewed ＞ textbook です。

• F1｜confidence: 構造的整理（編集フレームワーク、外部事実の主張ではない）｜basis: editorial_framework｜period: 2026-08-06｜geo: universal｜span: 「三個不同的問題」拆解、兩份拔牙後尺寸回顧的版本取捨說明、以及「治療反應」與「長期喪失」兩種結果指標的區分，均為本站為了讓病人問對問題而定義的說明結構｜caveat: 公式分類、臨床判定基準、診断ツールのいずれでもなく、医師の評価に代わらない
• F2｜confidence: verified（2026-08-06、efetch で取得した抄録と逐語照合）｜basis: peer_reviewed（レビュー、PMID 24570985）｜period: 2014 年刊行｜geo: universal｜span: 「The goal of regenerative periodontal therapy is to completely restore the tooth's supporting apparatus that has been lost due to inflammatory periodontal disease or injury」「It is characterized by formation of new cementum with inserting collagen fibers, new periodontal ligament, and new alveolar bone」「conventional, nonsurgical, and surgical periodontal therapy usually result in clinical improvements evidenced by probing depth reduction and clinical attachment gain, but the healing occurs predominantly through formation of a long junctional epithelium and no or only unpredictable periodontal regeneration」｜caveat: 叙述的レビュー（システマティックレビューではない）で、歯周創傷治癒の一般的形態を述べる。2026-08-06 の検索で、この一般的記述を置き換える同じ著者群の新しい論文は見つからなかった。より新しい同分野のレビューは特定の生体材料に焦点を置くことが多く、本カードは材料レベルの結論を引用しない
• F3｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（ヒト生検研究、PMID 18498382）｜period: 2008 年刊行、6 か月観察｜geo: universal｜span: 「Twenty-seven biopsies, representative of the early (2-4 weeks, n=10), intermediate (6-8 weeks, n=6), and late phase (12-24 weeks, n=11) of healing, were collected and analysed」「Granulation tissue that was present in comparatively large amounts in the early healing phase of socket healing, was in the interval between the early and intermediate observation phase replaced with provisional matrix and woven bone」「The presence of osteoblasts peaked at 6-8 weeks and remained almost stable thereafter」「great variability exists in man with respect to hard tissue formation within extraction sockets」「whereas a provisional connective tissue consistently forms within the first weeks of healing, the interval during which mineralized bone is laid down is much less predictable」｜caveat: 生検標本が少ない（27 件）、無作為割付ではない。窩内の組織変化を記述するもので、歯槽堤外形には及ばない
• F4｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（システマティックレビュー・メタ解析、PMID 33067890）｜period: PROSPERO CRD42020178857、2021 年刊行。2026-08-06 に検索し、本題の「処置をしない自然治癒」の寸法変化について現行のより新しい版であることを確認した（より古い版は F5）｜geo: universal｜span: 「Twenty-eight articles were selected, of which 20 could be utilized for the conduction of quantitative analyses」「Pooled estimates revealed that mean horizontal, vertical mid-facial and mid-lingual ridge reduction assessed clinically in non-molar sites was 2.73 mm (95% CI: 2.36-3.11), 1.71 mm (95% CI: 1.30-2.12) and 1.44 mm (95% CI: 0.78-2.10), respectively」「Mean horizontal, vertical mid-facial and mid-lingual ridge reduction assessed radiographically in molar sites was 3.61 mm (95% CI: 3.24-3.98), 1.46 mm (95% CI: 0.73-2.20) and 1.20 mm (95% CI: 0.56-1.83), respectively」「A variable amount of alveolar bone resorption occurs after unassisted socket healing depending on tooth type」｜caveat: 統合値は集団推定であり、個人に期待される mm 値ではない。臨床測定と画像測定の数値を相互に置き換えてはならない
• F5｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（システマティックレビュー、PMID 22211303）｜period: 2012 年刊行、20 研究を採択。本カードは F4（2021）を主な引用とし、本項は時間的推移と同一アンカーの整合に用いる（同一アンカーは KM-DENTAL-24、KM-DENTAL-34 にも用いる）｜geo: universal｜span: 「horizontal dimensional reduction (3.79 ± 0.23 mm) was more than vertical reduction (1.24 ± 0.11 mm on buccal, 0.84 ± 0.62 mm on mesial and 0.80 ± 0.71 mm on distal sites) at 6 months」「Human re-entry studies showed horizontal bone loss of 29-63% and vertical bone loss of 11-22% after 6 months following tooth extraction」「These studies demonstrated rapid reductions in the first 3-6 months that was followed by gradual reductions in dimensions thereafter」｜caveat: より古い版で、F4 とは採択研究と測定方法が異なる。二組の数値を混用してはならない
• F6｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（後ろ向き画像研究、PMID 30915316）｜period: 2019 年刊行、6 か月追跡｜geo: universal｜span: 「Four series of panoramic radiographic images were obtained from the selected cases, including images from the first visit, immediately after extraction, 6 weeks, and 6 months after extraction」「A large RID (> 6 mm) can be reduced gradually and consistently over time. More than half of the samples recovered nearly to their normal healthy condition (RID ≤ 3 mm) by the 6-month follow-up」｜caveat: 対照群のない後ろ向きパノラマ X 線分析で、状況は水平埋伏した下顎第三大臼歯抜去後の第二大臼歯遠心の欠損に限られる。歯周炎による骨喪失へ外挿してはならない
• F7｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（システマティックレビューの概観、PMID 40844636）｜period: PROSPERO CRD42022307614、2025 年刊行｜geo: universal｜span: 「Thirty-three reviews were included, collectively encompassing 191 distinct primary studies that evaluated flap design, extraction socket management, and postsurgical care」「Ridge preservation is the most effective intervention in improving pocket probing depth [MD= -1.42; 95% CI (-2.01, -0.83), 6-72 months follow-up], clinical attachment level [MD = 1.98; 95% CI (1.44, 2.52), 4.5-72months follow-up] and alveolar bone height [MD = 1.21; 95% CI (0.21, 2.21), 6-12 months follow-up] distal to mandibular second molar」「All regenerative techniques enhanced periodontal outcomes, though high heterogeneity and variable study quality urge cautious interpretation」｜caveat: 原文は英語の最上級で介入間の相対効果を記述する。本カードの中国語原文は最上級を避け「統合効果がより大きい」と記述する。異質性が高く、採択レビューの質も一様でなく、著者らは慎重な解釈を求める
• F8｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（前向き追跡研究、PMID 37926789）｜period: 2023 年刊行、保定期間は少なくとも 1 年｜geo: universal｜span: 「The study includes 24 adult patients with maxillary protrusion (8 males, 16 females) who were treated with extraction of four first premolars and had alveolar bone defects (PBD or LBF) in maxillary anterior teeth following orthodontic treatment」「Cone-beam computed tomography imaging measurements were obtained before (T1), after (T2) orthodontic treatment, and after at least 1-year removable thermoplastic retainer retention (T3)」「The incidence of PBD and LBF in maxillary anterior teeth significantly increased after orthodontic treatment and decreased during the retention period」「the alveolar bone defect of maxillary anterior teeth caused by orthodontic retraction significantly improved during the retention period, indicating good long-term bone remodeling」｜caveat: 標本は 24 人、対照群なし。欠損は炎症性破壊ではなく矯正的歯の移動によるもので、著者らは改善の一部を前歯の自発的再位置決めに帰している。歯周骨欠損の自然回復として外挿してはならない
• F9｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（システマティックレビュー・メタ解析、PMID 38706227）｜period: 2025 年刊行（オンライン 2024-05）｜geo: universal｜span: 「Twenty-nine RCTs were identified, and all of them were included in the meta-analysis」「In systemically healthy patients, the greater part of reduction in PPD and gain in CAL occurs within the first 1-2 months after subgingival instrumentation. However, additional benefits in terms of pocket depth reduction occur beyond these early time points」｜caveat: 対象集団は全身的に健康な患者に限られる。結果はポケット深さとアタッチメントレベルであり、画像上の骨変化ではない
• F10｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（システマティックレビュー・メタ解析、PMID 38317331）｜period: 2023-08-28 まで検索、2024 年刊行｜geo: universal｜span: 「From among the 1323 potentially eligible reports, 41 studies (5584 patients, 29,908 molars retained at the beginning of maintenance therapy, mean follow-up duration of 14.7 years) were included」「The pooled survival rate of the molars during maintenance therapy was 82% (95% CI: 80%-84%)」「The average loss of molars was 0.05 per patient per year (95% CI: 0.04-0.06)」「Six patient-related factors (older age, lack of compliance, smoking, bruxism, diabetes and lack of private insurance) and five tooth-related factors (maxillary location, high probing pocket depth, furcation involvement, higher mobility and lack of pulpal vitality) were identified as risk factors for molar loss during maintenance therapy」｜caveat: 縦断的観察研究を採択し、修正版 Newcastle-Ottawa 尺度で質を評価。生存率は成功率ではなく、対象は専門的歯周治療を受けて維持を継続した人である
• F11｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（システマティックレビュー・メタ解析、PMID 25818586）｜period: 2015 年刊行｜geo: universal｜span: 「Eight studies, which had a regular-compliance (RC) group and an erratic-compliance (EC) group with at least a 5-y follow-up period, qualified for the meta-analysis」「The risk of tooth loss in the RC group was significantly lower than that in the EC group (pooled RRTL: 0.56 [confidence interval (CI): 0.38, 0.82]; pooled RDTL: -0.05 [CI: -0.08, -0.01])」｜caveat: 著者らは未特定の異質性源を報告する。「協力度」の定義は研究間で異なり、観察的関連である
• F12｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（システマティックレビュー・個別患者データメタ解析、PMID 23590649）｜period: 2012-08 まで検索、2013 年刊行。2026-08-06 の検索では同じ主題の代替メタ解析は得られず、特定術式（根面被覆など）のより新しいレビューのみを確認したため、本論文を残しエビデンス基盤の限界を明記する｜geo: universal｜span: 「Of 2455 potentially eligible articles, two studies were included」「SC seems to be an important component of periodontal therapy, and smokers should be encouraged to quit as part of their overall periodontal management; however, only a limited base of evidence was available for analysis」｜caveat: 採択は 2 研究のみで、エビデンス基盤は限られる。禁煙で骨が戻ると書き換えてはならない
• F13｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（システマティックレビュー・メタ解析・試験逐次解析、PMID 41413925）｜period: 2024-04 まで検索、2026 年刊行｜geo: universal｜span: 「Screening of the 3574 papers resulted in 32 eligible publications, which reported 30 unique studies」「Meta-analyses showed no differences of means in incremental changes from baseline to post-NSPT between the DM and non-diabetics (NDM) groups for CAL and PPD」「it can be stated with moderate certainty that the difference in treatment outcomes of periodontitis patients following NSPT between the DM and NDM groups is insignificant」｜caveat: 比較対象は「治療後の変化量」であり、糖尿病と歯周病が無関係という意味ではない。また、F10 の糖尿病が長期大臼歯喪失のリスク因子という結果も変えない
• F14｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（システマティックレビュー・メタ解析、PMID 37920517）｜period: 2023-07-01 まで検索、2023 年刊行｜geo: universal｜span: 「28 observational studies with 19611 patients, including 5813 cases in the postmenopausal osteoporosis group and 13798 cases in the non-osteoporosis group」「the degrees of clinical attachment loss (CAL), probing depth (PD), gingival recession (GR), simplified oral hygiene index (OHIS), and percentage of sites with bleeding on probing (BOP) in the postmenopausal osteoporosis group were higher than those in the non-osteoporosis group」「there were no significant differences in the loss of alveolar crestal height (ACH)」｜caveat: 採択研究はすべて観察研究であり、関連であって因果ではない。対象集団は閉経後女性に限られる
• F15｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（ランダム化比較試験、PMID 38263558）｜period: 2024 年刊行、12 か月追跡｜geo: universal｜span: 「One hundred and fifty edentulous subjects underwent bone mineral density (BMD) assessment followed by CD fabrication to measure RR height and width with computerized tomographic (CT) scans」「In both Groups S and NS, a statistically significant decrease in mandibular RR height (P = 0.000 for both) and width (P = 0.027 and 0.003, respectively) was observed at 1-year follow-up」「One-year RRR rate for Group S (1.30 mm) was insignificantly lesser than for group NS (1.33 mm)」「Short-term oral calcium and Vitamin D supplementation was ineffective in reducing RRR and improving BMD」｜caveat 補充：正文所用「150 位」為該試驗全文所載之樣本數，非摘要所載，2026-08-08 以 efetch db=pmc 取回全文確認｜caveat: 非盲検デザイン、単施設、12 か月追跡。対象は総義歯を装着する完全無歯顎者であり、歯が残る歯周病患者へ直接当てはめてはならない
• F16｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（システマティックレビュー、PMID 42041664）｜period: 2025-09 まで検索、2026 年刊行｜geo: universal｜span: 「Four studies met the inclusion criteria」「In patients with sufficient baseline vitamin D levels, supplementation provided limited additional clinical benefits beyond NSPT alone」「in vitamin D-deficient patients, supplementation regimens capable of restoring serum 25(OH)D levels above 30 ng/mL were consistently associated with greater reductions in PPD, improved CAL, and decreased plaque and bleeding indices」「long-term randomized trials are required to establish standardized protocols and confirm sustained clinical benefits」｜caveat: 採択は 4 研究のみで、定性的統合のみ（メタ解析なし）。結果指標はポケット深さとアタッチメントレベルで、骨量の回復ではない。服用の推奨に書き換えてはならない
• F17｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（システマティックレビュー・メタ解析、PMID 31860134）｜period: 1990 〜 2019 年のランダム化比較試験を採択、2020 年刊行。欧州歯周病連盟 S3 ガイドラインの委託レビューの一つ（同一アンカーは KM-DENTAL-24 にも用いる）｜geo: universal｜span: 「A total of 79 RCTs (88 articles) published from 1990 to 2019 and accounting for 3,042 patients and 3,612 intra-bony defects were included in this systematic review」「Only 10 of included studies were rated at low risk of bias」「All regenerative procedures provided adjunctive benefit in terms of CAL gain (1.34 mm; 0.95-1.73) compared with open flap debridement alone」「The strength of evidence was low to moderate」｜caveat: 深さ ≥3 mm の骨内欠損、少なくとも 12 か月追跡に限る。単純なフラップ掻爬のみとの群間差であり、個人に期待できる骨増加量ではない
• F18｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: clinical_guideline（S3 レベル臨床実践ガイドライン、PMID 32383274、欧州歯周病連盟）｜period: 2020 年刊行（2021 年に訂正あり）。2026-08-06 に検索し、ステージ I 〜 III の現行版は引き続き本論文であることを確認。ステージ IV 専用の別ガイドラインは本カードの範囲外｜geo: universal｜span: 「The S3 CPG approaches the treatment of periodontitis (stages I, II and III) using a pre-established stepwise approach to therapy that, depending on the disease stage, should be incremental, each including different interventions」｜caveat: 本カードは段階的治療の枠組みだけを引用し、個別介入の推奨強度は引用しない。台湾での臨床実践はなお主治医の判断と全民健康保険署の規定による
• F19｜confidence: verified（2026-08-06、efetch で逐語照合）｜basis: peer_reviewed（後ろ向き研究、PMID 37010261）｜period: 2023 年刊行、10 年データ｜geo: universal｜span: 「Twenty-two patients with a total of 256 intra-bony defects were analyzed after regenerative surgery followed by OT initiated 3 months later」「Mean rBL gain was significant with 4.63 mm (±2.43 mm) after 1 year (T1), 4.19 mm (±2.61 mm) at final splinting (T2), and 4.48 mm (±2.62 mm) after 10 years (T10)」「Within the limitations of this retrospective study design, these 10-year findings suggest that in motivated and compliant patients with stage IV periodontitis and in need of OT an inter-disciplinary treatment can lead to favorable and stable long-term results」｜caveat: 後ろ向き、単施設、22 人で、再生手術と矯正治療を組み合わせた結果。原著者は結論を意欲と協力度の高いステージ IV 歯周炎患者に限定する。本カードはこの数字を一般的な期待値として示してはならない
• F20｜confidence: verified（2026-08-06、HTTP 200 の実測とページ逐語照合）｜basis: law（台湾医療法第 81 条、全国法規資料庫）｜period: 現行条文｜geo: TW｜span: 「醫療機構診治病人時，應向病人或其法定代理人、配偶、親屬或關係人告知其病情、治療方針、處置、用藥、預後情形及可能之不良反應。」｜caveat: 条文引用であり、法律意見ではない。本サイト仮訳・中文正文為準
• F21｜confidence: verified（2026-08-06、HTTP 200 の実測とページ逐語照合）｜basis: law（台湾医療法第 87 条第 2 項、全国法規資料庫）｜period: 現行条文｜geo: TW｜span: 「醫學新知或研究報告之發表、病人衛生教育、學術性刊物，未涉及招徠醫療業務者，不視為醫療廣告。」｜caveat: 本条は本カードのコンプライアンス注記の位置付けの根拠。本サイト仮訳・中文正文為準
• F22｜confidence: verified｜basis: internal_dataset（内部データ GSC、医学的 basis ではない。公開変換時には項目全体を出力しない）｜period: データ窓 2025-03〜2026-08｜geo: TW｜span: 本題查詢族共 4 個詞項、跨 3 個站，逐筆可對帳；｜caveat: 曝光は資産レベルの数値で、重複除去済みトラフィックではない。選題エビデンス数値は草稿 frontmatter と内部ファイルに残し、公開変換時に可視層へ入れない（2026-08-05 の決定）
• F23｜外部出典なし｜エビデンスの欠落と分業に関する声明（editorial、未検証ではない）｜geo: universal｜本カードでは、①いかなる金額または価格帯 ②台湾の全民健康保険の給付判定 ③骨移植材料の分類、治療期間、費用の構成（KM-DENTAL-24） ④骨増生後の合併症の分類と赤旗基準（KM-DENTAL-28） ⑤歯肉軟組織退縮の処置と費用（KM-DENTAL-27） ⑥いかなる再生医療製剤の有効性主張 ⑦いかなる製品またはブランド比較、を提供しない｜caveat: 編集上の境界声明であり、検証待ちの事実ではない

出典一覧

PubMed の項目はすべて 2026-08-06 に E-utilities efetch で抄録原文を取得して逐語照合した。法令条文は全国法規資料庫で HTTP 200 を実測し、逐語照合した。

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19. 台湾医療法第 81 条（全国法規資料庫）
20. 台湾医療法第 87 条（全国法規資料庫）
21. 内部データ：`analysis/reports/km-dental-backlog.md` #39 付録（語句×サイト×曝光を一件ずつ照合可能）
22. 編集フレームワーク：当サイトの「三つの問い」の整理と版の取捨選択の説明（外部出典なし、構造的整理と明記）

内部引用チェーン

• 骨補填材とは何か、材料分類と治療期間：骨補填材とは？費用はいくら、痛みはある？（KM-DENTAL-24）
• 骨補填後の合併症の分類と赤旗基準：骨補填材に後遺症はある？失敗したらどうなる？（KM-DENTAL-28）
• 歯肉（軟組織）退縮と骨喪失の見分け方：歯肉退縮はまだ救える？治療費はいくら？（KM-DENTAL-27）
• 抜歯窩の治癒タイムライン：抜歯の穴はどのくらいで治る？（KM-DENTAL-01）

公開ゲートへの注意：本カードは draft です。四言語（zh-Hans／en／ja）がそろう前に km_entries へ入れてはなりません。F5 と F4 の数値は異なる版のレビューに属し、翻訳で統合・交換してはなりません。