diff --git a/dental-server/dental-client/src/components/TransformModal.jsx b/dental-server/dental-client/src/components/TransformModal.jsx
index af83cd9..4002b1c 100644
--- a/dental-server/dental-client/src/components/TransformModal.jsx
+++ b/dental-server/dental-client/src/components/TransformModal.jsx
@@ -14,6 +14,8 @@ function formatDate(dateString) {
 export default function TransformModal({ isOpen, onClose, image, onSaved }) {
   const { showToast } = useToast();
   const [activeView, setActiveView] = useState('transform'); // 'transform' | 'gto'
+  const [step, setStep] = useState('choose'); // 'choose' (4 posições) | 'finetune'
+  const [baseRotation, setBaseRotation] = useState(0); // 0 | 90 | 180 | 270
   const [showInfo, setShowInfo] = useState(false);
   const [fineTuneAngle, setFineTuneAngle] = useState(0);
   const [remark, setRemark] = useState('');
@@ -29,6 +31,8 @@ export default function TransformModal({ isOpen, onClose, image, onSaved }) {
   useEffect(() => {
     if (!image) return;
     setFineTuneAngle(0);
+    setBaseRotation(0);
+    setStep('choose');
     setRemark('');
     setShowInfo(false);
     setActiveView('transform');
@@ -70,15 +74,17 @@ export default function TransformModal({ isOpen, onClose, image, onSaved }) {
 
   const resetAngle = () => setFineTuneAngle(0);
 
+  const totalRotation = ((baseRotation + fineTuneAngle) % 360 + 360) % 360;
+
   const saveTransform = async () => {
-    if (fineTuneAngle === 0) {
+    if (totalRotation === 0) {
       showToast('Nenhuma edição aplicada.', 'error');
       return;
     }
     setSaving(true);
     try {
       await api.post(`/images/${image.id}/transform`, {
-        rotation: fineTuneAngle,
+        rotation: totalRotation,
         flipH: false,
         flipV: false,
         remark
@@ -180,8 +186,44 @@ export default function TransformModal({ isOpen, onClose, image, onSaved }) {
         </div>
       )}
 
-      {/* View: Transformação */}
-      {activeView === 'transform' && (
+      {/* View: Transformação — PASSO 1: escolher entre 4 posições */}
+      {activeView === 'transform' && step === 'choose' && (
+        <div className="transform-view-wrapper">
+          <p style={{ textAlign: 'center', color: 'var(--text-muted)', fontSize: '0.85rem', margin: '4px 0 16px' }}>
+            Escolha a melhor orientação. Depois você faz o ajuste fino.
+          </p>
+          <div style={{ display: 'grid', gridTemplateColumns: 'repeat(4, 1fr)', gap: 12 }}>
+            {[0, 90, 180, 270].map((deg) => (
+              <button
+                key={deg}
+                type="button"
+                onClick={() => { setBaseRotation(deg); setFineTuneAngle(0); setStep('finetune'); }}
+                style={{
+                  border: '2px solid var(--glass-border)', borderRadius: 10, background: '#0b1220',
+                  padding: 8, cursor: 'pointer', display: 'flex', flexDirection: 'column',
+                  alignItems: 'center', gap: 6, transition: 'border-color .2s'
+                }}
+                onMouseEnter={(e) => (e.currentTarget.style.borderColor = 'var(--primary-color)')}
+                onMouseLeave={(e) => (e.currentTarget.style.borderColor = 'var(--glass-border)')}
+                title={`Usar ${deg}°`}
+              >
+                <div style={{ width: '100%', aspectRatio: '1 / 1', display: 'flex', alignItems: 'center', justifyContent: 'center', overflow: 'hidden' }}>
+                  <img
+                    src={imageUrl}
+                    alt={`${deg}°`}
+                    loading="lazy"
+                    style={{ maxWidth: '100%', maxHeight: '100%', objectFit: 'contain', transform: `rotate(${deg}deg)` }}
+                  />
+                </div>
+                <span style={{ fontSize: '0.8rem', fontWeight: 600, color: 'var(--text-secondary)' }}>{deg}°</span>
+              </button>
+            ))}
+          </div>
+        </div>
+      )}
+
+      {/* View: Transformação — PASSO 2: ajuste fino (escolhida + original) */}
+      {activeView === 'transform' && step === 'finetune' && (
         <div className="transform-view-wrapper">
           <div className="new-transform-layout">
             {/* Original */}
@@ -192,20 +234,27 @@ export default function TransformModal({ isOpen, onClose, image, onSaved }) {
               </div>
             </div>
 
-            {/* Preview (com rotação aplicada) */}
+            {/* Preview (orientação escolhida + ajuste fino) */}
             <div className="transform-panel panel-preview">
-              <h3 className="panel-title">Preview</h3>
+              <h3 className="panel-title">Preview ({totalRotation}°)</h3>
               <div className="img-container">
                 <img
                   src={imageUrl}
                   alt="Preview"
-                  style={{ transform: `rotate(${fineTuneAngle}deg)` }}
+                  style={{ transform: `rotate(${baseRotation + fineTuneAngle}deg)` }}
                 />
               </div>
             </div>
 
             {/* Controles de rotação */}
             <div className="transform-sidebar">
+              <button
+                type="button"
+                className="btn btn-secondary btn-small"
+                onClick={() => setStep('choose')}
+                style={{ width: '100%', marginBottom: 12 }}
+                title="Voltar para escolher a orientação"
+              >← Posições</button>
               <h3 className="sidebar-title" style={{ fontSize: '0.65rem', textTransform: 'uppercase', letterSpacing: 1, color: 'var(--text-muted)', marginBottom: 12 }}>Ajuste</h3>
               <div style={{ display: 'flex', flexDirection: 'column', gap: 8, alignItems: 'center', width: '100%' }}>
                 {[